Abstract: The present invention provides a quantum dot panel, including: a first substrate; a plurality of first cavities formed on the first substrate, so that adjacent ones of the cavities are separated from each other; a first roof layer covering the cavities so as to at least partially define the cavities; quantum dots contained in the first cavities; and a distribution layer in which the quantum dots are distributed and which is disposed within the first cavities. The quantum dot panel according to exemplary embodiments of the present invention includes quantum dots contained within predetermined structures formed on the substrate, thereby improving reliability of the quantum dot panel and simplifying the manufacturing process thereof.

Abstract: A method and apparatus for generating terahertz waves using laser plasma are disclosed herein. The method of generating high-power terahertz waves includes generating plasma by focusing a laser beam on a gas within a vacuum chamber, radiating laser beams into the magnetized plasma from opposite directions so that the laser beams collide with each other at a preset location, and generating terahertz waves of a predetermined frequency through the oscillation of the plasma generated by the collision of the laser beams.

Abstract: A method for generating high power electromagnetic radiation based on double-negative metamaterial (DNM), includes providing electrons of an electron beam moving in a vacuum close to an interface between the DNM and the vacuum at a predetermined average speed larger than a phase velocity of an electromagnetic wave propagating in the DNM so as to generate coherent high power radiation. The method can be applied but not limited to high power and compact Terahertz radiation sources and Cherenkov particle detectors and emitters.

Abstract: The present disclosure relates to a self-contained, random scattering laser generating device comprising a housing comprises an opening and an inner chamber, at least one quantum dot positioned inside the inner chamber, a high-energy emitting source positioned within the inner chamber and in radioactive communication with the at least one quantum dot, and a first lasing medium. The present disclosure also relates to a method comprising providing at least one quantum dot, contacting the at least one quantum dot with a high-energy emitting source whereby randomly scattered light is produced, partially coherently amplifying the randomly scattered light emitted from the at least one quantum dot, and generating a random scattering laser.

Abstract: Disclosed is a method for creating a mark desired properties on an anodized specimen and the mark itself. The method includes providing a laser marking system having a controllable laser pulse parameters, determining the laser pulse parameters associated with the desired properties and directing the laser marking system to mark the article using the selected laser pulse parameters. Laser marks so made have optical density that ranges from transparent to opaque, white color, texture indistinguishable from the surrounding article and durable, substantially intact anodization. The anodization may also be dyed and optionally bleached to create other colors.

Abstract: The present disclosure relates to a light modulating communication device comprising a housing comprising at least one inner chamber, and an opening, at least one quantum dot positioned inside the at least one inner chamber, a high-energy emitting source positioned within the at least one inner chamber, a modulator positioned proximal to the opening of the housing, and optionally, at least one reflector positioned within the at least one inner chamber. The present disclosure also relates to a method comprising providing at least one quantum dot, contacting the at least one quantum dot with high-energy particles such that light is produced from the at least one quantum dot, and modulating the light produced from the at least one quantum dot.

Abstract: To reduce the laser threshold by efficiently exciting a light-emitting body in a solid-state dye laser with light having high density, thereby facilitating emission of laser beams, and to miniaturize a solid-state dye laser including an excitation light source. A solid-state dye laser capable of emitting laser beams by efficiently introducing light from an excitation light source to a light-emitting body incorporated in an optical resonator structure and exciting the light-emitting body with light with high density, is realized.

Abstract: Apparatus and methods are disclosed for amplifying an energy beam such as a beam of laser light or a charged particle beam. An exemplary method includes providing a liner having a first end, a second end, a liner axis, and a lumen extending along the liner axis and being bound by interior reflective walls of the liner. An energy beam is introduced into the first end of the liner. The beam propagates through the lumen from the first end to the second end as the beam reflects multiple times from the interior walls of the liner. Meanwhile, an implosive force is applied to the liner. The implosive force compresses the interior walls implosively toward the liner axis in a manner that amplifies the beam as the beam propagates through the lumen of the imploding liner. The amplified energy beam can be used for any of various purposes including ignition of a fusion target.

Abstract: A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater than 10A20 W/cmA2 (watts per centimeter squared), a device for shaping the temporal intensity profile accompanying said at least one laser pulse for increasing the laser contrast above 10^5, preferably above IL 0A7, especially 1OA10, and a target capable of releasing a high-energy particle pulse, particularly an electron or a proton pulse, upon irradiation with at least one of said laser pulses. A. corresponding method using the device is also described.

Abstract: An electron radiation apparatus is provided. The electron radiation apparatus includes a beat-wave laser system generating a laser beat wave, an electron emitter emitting a density-modulated electron current induced by the laser beat wave, an electron accelerator accelerating the density-modulated electron current and generating a periodically bunched electron beam, and a radiation device receiving the periodically bunched electron beam and generating an electron radiation with a radiation frequency matched to one of the harmonics of the bunching frequency of the periodically bunched electron beam.

Abstract: Electron-beam-pumped semiconductor ultra-violet optical sources (ESUVOSs) are disclosed that use ballistic electron pumped wide bandgap semiconductor materials. The sources may produce incoherent radiation and take the form of electron-beam-pumped light emitting triodes (ELETs). The sources may produce coherent radiation and take the form of electron-beam-pumped laser triodes (ELTs). The ELTs may take the form of electron-beam-pumped vertical cavity surface emitting lasers (EVCSEL) or edge emitting electron-beam-pumped lasers (EEELs). The semiconductor medium may take the form of an aluminum gallium nitride alloy that has a mole fraction of aluminum selected to give a desired emission wavelength, diamond, or diamond-like carbon (DLC). The sources may be produced from discrete components that are assembled after their individual formation or they may be produced using batch MEMS-type or semiconductor-type processing techniques to build them up in a whole or partial monolithic manner, or combination thereof.

Abstract: A device for emission of electromagnetic radiation comprises a source of atomic particles and a collector disposed to receive atomic particles from the source. The collector comprises an emission medium, the medium comprising a crystal having a spatial dimension in the range from about 10 nanometers to about 50 micrometers, wherein the emission medium has the capability to generate opposing charge pairs upon absorption of atomic particles from the source and to emit electromagnetic radiation upon recombination of the pairs. The emission may be via spontaneous emission or, in certain embodiments, by stimulated emission. A laser assembly comprising this device, and methods for making the device are also presented herein.

Abstract: A system and method for collecting radiation, which may be used in a lithography illumination system. The system comprises a first surface shaped to reflect radiation in a first hemisphere of a source to illuminate in a second hemisphere of the source; and a second surface shaped to reflect radiation in the second hemisphere of the source to an output plane.

Abstract: An ultra-compact free electron laser comprising a pair of opposed superconducting cavities that produce identical electron beams moving in opposite directions such that each set of superconducting cavities accelerates one electron beam and decelerates the other electron beam. Such an arrangement, allows the energy used to accelerate one beam to be recovered and used again to accelerate the second beam, thus, each electron beam is decelerated by a different structure than that which accelerated it so that energy exchange rather than recovery is achieved resulting in a more compact and highly efficient apparatus.

Abstract: An apparatus and method is disclosed which may comprise a laser produced plasma EUV system which may comprise a drive laser producing a drive laser beam; a drive laser beam first path having a first axis; a drive laser redirecting mechanism transferring the drive laser beam from the first path to a second path, the second path having a second axis; an EUV collector optical element having a centrally located aperture; and a focusing mirror in the second path and positioned within the aperture and focusing the drive laser beam onto a plasma initiation site located along the second axis. The apparatus and method may comprise the drive laser beam is produced by a drive laser having a wavelength such that focusing on an EUV target droplet of less than about 100 ?m at an effective plasma producing energy if not practical in the constraints of the geometries involved utilizing a focusing lens. The drive laser may comprise a CO2 laser. The drive laser redirecting mechanism may comprise a mirror.

Abstract: The present invention provides in one of the embodiments for either a continuous wave (cw) or pulsed alkali laser having an optical cavity resonant at a wavelength defined by an atomic transition, a van der Waals complex within the optical cavity, the van der Waals complex is formed from an alkali vapor joined with a polarizable gas, and a pump laser for optically pumping the van der Waals complex outside of the Lorentzian spectral wings wherein the van der Waals complex is excited to form an exciplex that dissociates forming an excited alkali vapor, generating laser emission output at the wavelength of the lasing transition.

Abstract: An apparatus and method is disclosed which may comprise a laser produced plasma EUV system which may comprise a drive laser producing a drive laser beam; a drive laser beam first path having a first axis; a drive laser redirecting mechanism transferring the drive laser beam from the first path to a second path, the second path having a second axis; an EUV collector optical element having a centrally located aperture; and a focusing mirror in the second path and positioned within the aperture and focusing the drive laser beam onto a plasma initiation site located along the second axis. The apparatus and method may comprise the drive laser beam is produced by a drive laser having a wavelength such that focusing on an EUV target droplet of less than about 100 ?m at an effective plasma producing energy if not practical in the constraints of the geometries involved utilizing a focusing lens. The drive laser may comprise a CO2 laser. The drive laser redirecting mechanism may comprise a mirror.

Abstract: An apparatus for generation of Terahertz radiation comprising: (A) a Magnon Gain Medium (MGM), wherein the MGM supports generation of nonequilibrium magnons; and (B) at least one magnon mirror (MM). The nonequilibrium magnons are generated in the MGM. Interaction between nonequilibrium magnons leads to generation of Terahertz photons.

Abstract: A method and apparatus to generate a beam of coherent light including x-rays or XUV by colliding a high-intensity laser pulse with an electron beam that is accelerated by a synchronized laser pulse. Applications include x-ray and EUV lithography, protein structural analysis, plasma diagnostics, x-ray diffraction, crack analysis, non-destructive testing, surface science and ultrafast science.

Abstract: A method for generating mid-infrared light by maintaining multiple quantum well (MQW) structures based on the alloy systems PbSrZ and PbSnZ, where Z is S, Se, or Te, at temperatures in the range of from about 5° C. to about 55° C. and pumping the MQW structures with a shorter wavelength continuous wave laser pump beam or with an electrical current is provided.

Abstract: A semiconductor light emitting element, includes: a substrate; a first conductive semiconductor layer formed on the substrate; a strained emission layer formed on the first conductive semiconductor layer; and a second conductive semiconductor layer formed on the strained emission layer, wherein the strained emission layer includes: an element other than a constituent element of the substrate; and a rare earth element.

Abstract: A laser device for generating a laser beam and an optical signal amplifier using thereof for amplifying an optical signal are disclosed. The laser device comprises an optical fiber having a core portion in which a laser medium is doped and a cladding portion covering the core portion. The optical fiber is placed in a pumping light reflection portion in which an index matching oil is contained and a pumping light is confined. Alternatively, the optical fiber is bundled in a bundle portion in a pumping light reflection portion in which the pumping light is confined. The pumping light is introduced to the pumping light reflection portion from a pumping light introducing portion bundled with the laser fiber.

Abstract: A one piece laser assembly including a rod of gain medium with one end-face bonded to a broad end-face on a stack of optical wafers that process light differently and mirrors plated on the remaining exposed end-faces of the rod and the stack of wafers.

Abstract: A solid-state laser rod pumping module has a stack-type semiconductor laser including a plurality of bar-shaped components that are stacked in a direction parallel to the axis of a solid-state laser rod. Each bar-shaped component includes a plurality of laser-light-emitting portions that are aligned and integrated in a direction orthogonal to the axis of the solid-state laser rod. The large divergence angle of the stack-type semiconductor can be compensated by including a light focusing component for focusing laser light emitted out of the stack-type semiconductor laser. The focused light is guided by a laser light guiding component disposed in a diffusive reflection tube. A light guiding component guides the focused light onto a solid-state laser rod located within the diffusive reflective tube, while maintaining the length of one side of the cross section of the guided light.

Abstract: Disclosed are a system, and method, for producing a directly extracted flow of preferred-spin-polarization-direction electrons. The present invention optically pumped electron spin filter system provides a mixture of, typically alkali, atoms and electron polarization direction enhancing buffer gas, to a, preferably, single chamber essentially enclosed space, into which essentially enclosed space is entered a predominately single handedness, preferably laser system produced, beam of photons which optically pumps electrons in atoms to a dark-ground state with a preferred-spin-polarization, that is maintained in the presence of an imposed magnetic field, which magnetic field is oriented essentially co-linear with said beam of predominately single polarized photons.

Abstract: A method and circuit is disclosed for providing a control signal to a laser cavity controller. The cavity has two completely reflective surfaces. A long lived laser medium stores energy within the cavity. A computer generated waveform generated from enough values to appear substantially smooth after being amplified is provided to a control circuit having a Pockels cell or a Bragg cell. By controlling the amplitude of the computer generated waveform, the output pulse of the laser cavity is controlled.

Abstract: In one discharge tube in which laser gas flows, a plurality of microwave generating units composed of microwave power sources, magnetrons and waveguides are disposed, and each magnetron oscillates intermittently by switching the drive of the microwave power source. A main controller provides a reference clock to a power source unit composed of the plurality of microwave power sources. By this reference clock, adjacent microwave power sources in the power source unit are switched and driven at a predetermined phase difference through a phase shifter. Accordingly, discharge interference in adjacent discharge areas is avoided, so that a stable laser beam output may be obtained.

Abstract: A system for thermally stimulating a laser emissive device comprises a thermal generating device, a photon emissive device that is capable of generating photons upon exposure to thermal energy, a laser emissive source, and an optical waveguide interposed between the photon emissive source and laser emissive source to direct photons to the laser emissive source to effect photon stimulation of the same. The waveguide may be in the form of a light pipe comprising the photon emissive material, which material is disposed within the thermal energy source. The photon emissive material is selected to produce a specific wavelength of photons that are collected within and directed through the optical waveguide to a laser rod. The photons routed to the laser rod stimulate a specific wavelength laser emission. If desired, the system can also be used with more than one target, e.g., more than one laser device, or a photovoltaic cell to produce electricity.

Abstract: A semiconductor device such as a light emitting semiconductor device comprising a mask layer having opening areas and a selective growing layer comprising a semiconductor grown selectively by way of the mask layer, with each of the mask layer and the selective growing layer being disposed by two or more layers alternately. The semiconductor device is manufactured by a step of laminating on a substrate a mask layer having opening areas and a selective growing layer comprising a semiconductor grown selectively way of a mask layer, each by two or more layers alternately and a subsequent step of laminating semiconductor layers thereon. Threading dislocations in the underlying layer are interrupted by the first mask layer and the second mask layer and do not propagate to the semiconductor layer. The density of the threading dislocations is lowered over the entire surface and the layer thickness can be reduced.

Abstract: This disclosure relates to the production of coherent waves of electromagnetic radiation, especially of short wavelengths including X rays, in the form of pulses or continuous beams, utilizing mutually interacting beams of charged particles that include positive ions and electrons. The atoms of which the ions are formed exist in states of excitation energy by virtue of their ionization. The ions capture electrons as the two beams interact, thereby becoming capable of undergoing de-excitation and emitting characteristic electromagnetic radiation. When heavy elements and a high degree of ionization are involved, the radiation so produced can be of high frequency; often X rays. The radiation energies can be of large natural widths which make conditions favorable for the emissions to be composed into a coherent pulse or beam.

Abstract: A high-efficiency plasma confining method, and a laser oscillating method of oscillating a laser, confine a plasma generated by entering a laser beam via an entry of a superconducting cylinder within the cylinder. The methods include the step of inhibiting diffusion or expansion in the radial or axial direction of the generated plasma by reducing the inside diameter of the cylinder between the entrance and an exit thereof. A magnetic line of force may be generated in the axial direction by winding a coil around the superconducting cylinder, to thereby confine the plasma. A laser oscillator for carrying out the method includes a superconducting cylinder, a supply mechanism for supplying a gas or a solid into the cylinder, and a laser irradiating mechanism. The inside diameter of the cylinder is reduced between an entry and an exit thereof, or the inside diameter of the cylinder is reduced at the entry and the exit thereof.

Abstract: In a single-atom microlaser, a pair of opposed reflectors define a high-finesse or "high-Q" optical cavity therebetween. A source delivers a stream of multiple-energy-level atoms or particles into the cavity. Each individual atom in the stream is excited by a pump from a lower energy level to an upper energy level before injection into the cavity. The cavity resonance frequency is substantially matched to the frequency of a photon emitted by each atom as it enters the cavity. The photon is emitted due to a transition in energy between the upper level and lower level of each atom. In this manner, upon entry of a sequence of individual atoms into the cavity for example, the average number of photons resonating in the cavity exceeds one and the average number of atoms in the cavity is less than one. The photons are sustained in the high-Q cavity for a long enough time period such that the photon field interacts with the next atom in the stream.

Abstract: A method and apparatus for exchanging energy between relativistic charged particles and laser radiation using inverse diffraction radiation or inverse transition radiation. The beam of laser light is directed onto a particle beam by means of two optical elements which have apertures or foils through which the particle beam passes. The two apertures or foils are spaced by a predetermined distance of separation and the angle of interaction between the laser beam and the particle beam is set at a specific angle. The separation and angle are a function of the wavelength of the laser light and the relativistic energy of the particle beam. In a diffraction embodiment, the interaction between the laser and particle beams is determined by the diffraction effect due to the apertures in the optical elements. In a transition embodiment, the interaction between the laser and particle beams is determined by the transition effect due to pieces of foil placed in the particle beam path.

Abstract: An electron beam and a positron beam accelerated to the same energy are caused to join into a confluence in the same direction by a magnet for joining electrons and positrons, and positronium molecules or beam-shaped para-positroniums of the same phase cooled to transient Bose-Einstein condensation or the vicinity thereof are formed on the axis of confluence by a beam focusing solenoidal coil, thereby simultaneously generating gamma-ray lasers of two wavelengths which accompany annihilation caused by self-stimulated radiation, namely a forward GASER, which is a monochromatic gamma-ray laser having a photon energy of greater than several MeV and a backward GASER, which is a monochromatic gamma-ray laser having a photon energy of less than 200 keV.

Abstract: A compact fission reactor generates a flux of fission fragments, fission neutrons, and gamma-ray photons. The flux excites a noble element converter medium which produces light. Optical means are provided for focusing the light onto an array of photovoltaic cells. The photovoltaic cells convert the light radiation into electrical energy for various load applications.

Abstract: A radioluminescent light source comprising a crystalline III-V or II-VI semiconductor or a group IV quantum semiconductor and a radioactive element adapted to cause the semiconductor to produce light is disclosed. The radioactive element, such as tritium, is either incorporated within the semiconductor, preferably proximate to the p-n junction of the semiconductor, or placed adjacent the semiconductor.

Abstract: The free electron laser wiggler has therein a device for generating a variable short period wiggler field. A Type II superconducting material is formed into a field modifying means having a channel therein through which a beam of free electrons travels. The field modifying means is held within a vacuum chamber further having a source of external magnetic fields therein and a cooling means therein. The magnetic field generated must fall within the upper and lower critical magnetic field of the Type II superconducting material. The magnetic field penetrates the superconducting material generating a mixed state of superconducting and normal regions. The amplitude and period of the wiggler field in this structure can be controlled by varying the temperature, applied magnetic field, and the impurity concentration in the superconducting material to affect the fluxoid lattice. The electron beam interacting with this wiggler field outputs short wavelength radiation.

Abstract: An apparatus is provided for driving a solid state laser by a nuclear powered fluorescence source which is located remote from the fluorescence source. A nuclear reaction produced in a reaction chamber generates fluorescence or photons. The photons are collected from the chamber into a waveguide, such as a fiber optic waveguide. The waveguide transports the photons to the remote laser for exciting the laser.

Abstract: A laser medium for use in a slab laser having a light absorbing member provided in a region, wich is deviated from a zigzag path to be followed by a laser beam to be extracted therefrom and thus the laser beam does not pass through. Thereby, parasitic oscillation can be effectively suppressed, and laser oscillation and light amplification can be performed for a long period of time.

Abstract: A laser medium for use in a composite slab type laser, wherein laser active layers are divided in the longitudinal direction of the laser medium by removing at least a part of a region, which is deviated from a zigzag path and a laser beam to be extracted therefrom does not pass through. Thereby amplified spontaneous emission can be weaken and parasitic oscillation can be effectively suppressed, and further laser oscillation and light amplification can be performed for a long period of time.

Abstract: A lasing cylinder emits laser radiation at a gamma-ray wavelength of 0.87 .ANG. when subjected to an intense neutron flux of about 400 eV neutrons. A 250 .ANG. thick layer of Be is provided between two layers of 100 .ANG. thick layer of .sup.57 Co and these layers are supported on a foil substrate. The coated foil is coiled to form the lasing cylinder. Under the neutron flux .sup.57 Co becomes .sup.58 Co by neutron absorption. The .sup.58 Co then decays to .sup.57 Fe by 1.6 MeV proton emission. .sup.57 Fe then transitions by mesne decay to a population inversion for lasing action at 14.4 keV. Recoil from the proton emission separates the .sup.57 Fe from the .sup.57 Co and into the Be, where Mossbauer emission occurs at a gamma-ray wavelength.

Abstract: An electron beam and a positron beam are separately accelerated and stored to a predetermined energy, both beams are joined (in a predetermined direction), and a free positronium beam is generated. As a result, on the positronium beam axis, a monochromatic gamma ray having an energy twice the electron energy and a monochromatic X-ray having a photon energy of 1.3/10.sup.6 of this gamma ray are generated as irradiation light.

Abstract: Accelerator for coherent bosons. Helium clusters are formed by expansion of helium gas through a nozzle into a low pressure chamber. The clusters contain coherent helium particles. Laser light is shone onto the clusters to cause the coherent helium atoms in the clusters to be accelerated by impact of the coherent light from the laser thereon, so that the helium atoms form a high energy coherent beam.

Abstract: A radioactive light source consists of a vacuum tight envelope filled with a mixture of a radioactive gas such as tritium with one or more other gases which luminesce when excited by the emission from the radioactive gas without the aid or requirement of any externally applied energy source, such as electrical power. This luminescence may be viewed through the wall of the chamber which may be transparent. Alternatively, all or a part of the luminescence may be converted to a different region of the spectrum by a suitable phosphor layer coated on the wall of the envelope.

Abstract: A traveling-wave, laser-produced-plasma, energy source used to obtain single-pass gain saturation of a photoionization pumped laser. A cylindrical lens is used to focus a pump laser beam to a long line on a target. Grooves are cut in the target to present a surface near normal to the incident beam and to reduce the area, and hence increase the intensity and efficiency, of plasma formation.

Abstract: Normal stimulated Raman scattering (SRS) is done in a gas cell with pump and Stokes seed input beams. The pump photons excite gas molecules in the gas cell from their ground state and the Stokes seed photons stimulate the de-excitation of the molecules back to a lower state (emitting more Stokes photons in the process). The SRS enhancer entails inputting another beam at a frequency, different from the pump and seed, tuned between a third molecular state and the Raman virtual state created by the pump/seed off-resonant two-photon transition. The third laser enhances the Raman virtual state, thereby also enhancing the two-photon transition rate. Since the two-photon transition is the SRS process, the Stokes amplification is enhanced.

Abstract: Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.

Abstract: Apparatus is provided for generating energy in the form of laser radiation. A tokamak fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The tokamak design provides a temperature and a magnetic field which is effective to generate a neutron flux of at least 10.sup.15 neutrons/cm.sup.2.s. A conversion medium receives neutrons from the tokamak and converts the high-energy neutrons to an energy source with an intensity and an energy effective to excite a preselected lasing medium. The energy source typically comprises fission fragments, alpha particles, and radiation from a fission event. A lasing medium is provided which is responsive to the energy source to generate a population inversion which is effective to support laser oscillations for generating output radiation.

Abstract: A nuclear pumped laser capable of producing long pulses of very high power laser radiation is provided. A toroidal fusion reactor provides energetic neutrons which are slowed down by a moderator. The moderated neutrons are converted to energetic particles capable of pumping a lasing medium. The lasing medium is housed in an annular cell surrounding the reactor. The cell includes an annular reflecting mirror at the bottom and an annular output window at the top. A neutron reflector is disposed around the cell to reflect escaping neutrons back into the cell. The laser radiation from the annular window is focused onto a beam compactor which generates a single coherent output laser beam.

Abstract: A pre-excited excimer laser is formed in a thin flat package. Input X-ray photons which are modulated by passing through a body to be analyzed raise the pre-excited excimer gas molecules to a lasing energy level and the coherent radiation produced is measured and produces an amplified image of the input X-ray photon modulation.