Abstract: A frequency domain kernel phase processor comprises an input buffer to st Fourier coefficients input from a Fourier transform of a communications signal. A communications signal suitable for processing by the present invention typically comprises a desired signal masked by a stronger interference signal having varying power that spans a range of frequency bins encompassing the desired signal. A scheduler inputs Fourier transform coefficients from the input buffer and generates a series of magnitude squares and symmetric phase differences for each frequency bin. The magnitude squares and the symmetric phase differences are output to phase transform processors which transform the symmetric phase differences to reveal the desired signal. The transformed outputs from the phase transform processors are output to an output buffer to be formatted and displayed.

Abstract: A method and apparatus to decompose nonhydrolyzable ambients such as chlorofluorocarbons and nitrogen trifluoride which enables the conventional disposal of their byproducts are disclosed. It employs photo-decomposition of the nonhydrolyzable ambient using UV light and a mediating species to allow chemical reactions to occur which form an effluent which is hydrolyzed by conventional methods. This abatement process is amenable to point-of-use decomposition systems required for modular cluster tool systems used in microelectronic device fabrication.

Abstract: An optical probe for illuminating a location outside or inside a medical ient with a range of optical wavelengths appropriate to both diagnostic and surgical procedures comprises a polarization-preserving optical waveguide to conduct a polarized light beam to a polarizing beamsplitter, an optical detector to detect light deflected by the beamsplitter, a quarter-wave plate to couple the light between a non-refractive focusing element and a target, and a probe enclosure.

Abstract: A laser diode power combiner comprises a dye laser operably coupled to an array of laser diodes for combining optical power from the laser diodes into a single, coherent laser beam.

Abstract: A tunable laser produces laser emission at at least two wavelengths simuleously. The tunable laser includes at least two gain elements, where each gain element generates a different wavelength. Means for optically exciting each laser gain element is appropriately disposed for either end pumping or side pumping to produce a laser emission within a preselected range of wavelengths. A wavelength dispersing element such as a prism is disposed in the laser resonator cavity for dispersing the wavelengths operating simultaneously within the laser resonator cavity and to create separate regions for each laser gain element. Laser gain elements may be tunable laser gain elements or discrete emitting laser gain elements. Arbitrarily large wavelength separations between the wavelengths operating simultaneously may be achieved in this manner producing stable cw or pulsed output, Q-switched or line narrowed depending on the means disposed within the laser resonator cavity.

Abstract: A thermal neutron detector comprises an enclosure containing a helium-xenon gas mixture, an optical fiber, and an electrode arranged to detect ion particles. The optical fiber detects photons generated by a reaction of the gas mixture with neutrons passing through the enclosure. The reaction also generates ion particles that are detected by the electrode. A coincidence detector generates an output signal corresponding to the correlation of ion detections from the electrode with photon detections from the optical fiber, rejecting signals generated from the electric field that are not correlated with photon detections.

Abstract: A fastener retainer removal tool comprises a handle, a shank extending from he handle, and a tip at the distal end of the shank. The tip has a narrow portion and a wide portion divided by a slot that is tapered outward on one side. The other end of the slot is enlarged to hold a workpiece inside the slot. The narrow portion of the tip is used for guiding safety wire and cotter keys into the slot. The wide portion of the tip is used as a lever to assist in bending thick cotter keys.

Abstract: A superconducting transformer comprises a superconducting primary layer arranged to conduct an externally supplied primary electric current around a primary core to establish a magnetic flux through the primary core. The superconducting primary layer is formed on a primary substrate of electrically insulating, non-magnetic material. A superconducting secondary layer is arranged to conduct a secondary electric current around a secondary core. The superconducting secondary layer is formed on a secondary substrate of electrically insulating, non-magnetic material. The primary and secondary cores are made of a non-saturating material. The secondary electric current is generated by stacking the layers to couple the magnetic flux from the primary core to the secondary core. Superconducting vias are formed through the primary, isolation, and secondary layers for making external connections to the transformer.

Abstract: A buried, gate insulator field effect transistor is disclosed. It comprises source, drain, substrate, gate, and a gate insulator layer separating the gate from the source, drain and substrate; and a protective silicon dioxide covering layer. Windows are excised into this covering layer to allow electrical connection to the source, substrate, drain, and gate. The substrate and gate are vertically aligned in the resulting structure. The source, drain and gate are fabricated from a doped, semiconductor of one polarity while the substrate is fabricated from doped semiconductor of the opposite polarity. The gate insulator layer is fabricated by implanting an element or elements selected from Group V, VI or VII into the semiconductor to form a semiconductor-compound insulator. Methods of fabricating this device are also disclosed. In one embodiment the device is fabricated on an insulating base layer. The gate is formed next to the base. In a second embodiment, no base is used.

Abstract: A method uses an excimer laser to activate previously implanted dopant species in the backside of a backside-illuminated CCD or to incorporate dopant ions from a gaseous ambient into the backside of a backside-illuminated CCD and simultaneously activate. The controlled ion implantation of the backside and subsequent thin layer heating by the short wavelength pulsed excimer laser energy activates the dopant and provides for an improved dark current response and improved spectral response. The energy of the pulsed excimer laser is applied uniformly across a backside-illuminated CCD in a very thin layer of the semiconductor substrate (usually silicon) material that requires annealing to uniformly activate the dopant. The very thin layer of the material can be heated to exceedingly high temperatures on a nanosecond time scale while the bulk of the delicate CCD substrate remains at low temperature.

Abstract: A laser comprises an upconversion laser gain element made of a crystalline xide host doped with activator ions for emitting output radiation at an output wavelength. The gain element is pumped by pumping radiation at a pumping wavelength that is longer than the output wavelength. A laser resonator comprising a reflective element and an output coupler is arranged with the gain element to resonate the output radiation. The reflective element is spaced from the output coupler by a distance approaching the radius of curvature of the reflective element or the output coupler. The pumping radiation has a waist that is substantially coincident with the waist of the output radiation within the active region of the gain element.

Abstract: An automatic medical monitor of the present invention comprises medical s sensors for collecting a time-ordered set of values representative of medical signs such as pulse, respiration, and blood pressure. The medical sign sensors are coupled to a medical sign data processor that forms statistics from the medical sign data and forms a modified Fast Initial Response (FIR) Shewhart cumulative sum and a variance cumulative sum to detect changes in health state. When a change in health state is detected, the medical sign data processor displays the statistics on a display and logs them on a printer.

Abstract: A dielectric power transformer comprises a tuning inductor having a nonmatic core connected in parallel with a capacitive voltage divider. The dielectric power transformer transforms the voltage of an alternating current power source connected across the inductor into a voltage across a load connected to the capacitive voltage divider. The dielectric power transformer has a resonant frequency substantially equal to the frequency of the power source.

Abstract: Electroluminescent devices are formed on a transparent sapphire substrate follows. Crystalline silicon is formed on the sapphire substrate and patterned into a mesa. An electrode of, for example, titanium silicide, is formed in the silicon around the mesa, and an electrically insulating layer is formed over the electrode. The crystalline silicon is exposed on the mesa, and a porous silicon layer is formed on the crystalline silicon. An electrode made of aluminum, for example, is formed on the porous silicon layer. This electrode need not be transparent. An outer insulating layer may be formed on the aluminum electrode and additional electrodes may be formed on and through the outer insulating layer to make electrical contact with the titanium silicide and aluminum electrodes, respectively. A voltage source may be connected to the electrodes to pass a current through the porous silicon to cause light to be emitted from the porous silicon through the sapphire substrate.

Abstract: A pre-processing method and pre-processor decompose a first problem belong to a class of linear algebra problems comprising an input sparse symmetric matrix into a suite of sub-problems. The pre-processor generates a suite of signals representing the information content of a permutation of the rows and columns of the sparse symmetric matrix. These signals are used to define a block-bordered diagonal form leading to a sparse Schur-complement resolution wherein each sub-problem corresponds to a perfect parallelism in the first problem. The preprocessor allocates the sub-problems to sub-processors in a network of parallel architecture computers. The sub-processors solve the sub-problems concurrently and combine the results in a front-end computer, which outputs a solution to the first problem.

Abstract: A method for tuning fiber optic coupler and wavelength division multiplexer devices comprises the steps of fusing optical fibers having a refractive index responsive to ultraviolet radiation to form a coupling region having a coupling ratio dependent upon the refractive index, and subjecting the coupling region to ultraviolet radiation to adjust the coupling ratio to a predetermined value at a given operating wavelength.

Abstract: A fiberoptic cable junction for joining the ends of two fiberoptic cables mprises the steps of inserting a tube fastener over each cable end and inserting a protective sleeve and a splint fastener over either cable end. The cable ends are then spliced together. The protective sleeve is positioned over the splice and is supported by fastening an inner splint rod to the cable buffer with the tube fasteners. The cable buffer is supported by an outer splint rod fastened to the tube fasteners by the splint fastener.

Abstract: The narrowband signal revealer comprises a sensor, a baseband generator, an daptive locally optimum processor (ALOP), and a complex signal spectral analyzer. The sensor generates an input signal representative of a tonal signal masked by wideband interference. The baseband generator transforms the input signal into a complex baseband signal. The ALOP processes the complex baseband signal to suppress the interference and generates a complex output signal representative of the tonal signal. The spectral analyzer then analyzes the complex output signal and displays tonal signal power.

Abstract: A method for spectrum analysis by complex cumulants comprises the steps of eceiving a signal, Fourier transforming the signal to form a series of complex Fourier coefficients, forming complex cumulants from the series of complex Fourier coefficients, and displaying the cumulants in a form wherein the non-Gaussian components of the signal are emphasized.

Abstract: A high-power broadband antenna comprises an impedance matching transformer electrically coupled to a radio frequency source generating an input signal having a base wavelength corresponding to the lowest frequency of the input signal. The impedance transformer is electrically coupled to at least two vertical antenna sections. Each antenna section comprises a plurality of substantially collinear electrically conductive radiating elements fixed to an electrical insulator mounted on a horizontal ground plane. Each radiating element has a length appropriate to effect optimum overall efficiency of the high-power broadband antenna over the frequency bandwidth of the input signal. At least two loading elements are each electrically coupled between the radiating elements in each antenna section. Each loading element comprises a parallel combination of a resistor, an inductor, and a capacitor to effect optimum overall efficiency of the high-power broadband antenna over the frequency bandwidth of the input signal.