Abstract: An apparatus for individually trapping atoms, individually imaging the atoms, and individually cooling the atoms to prevent loss of the atoms from the trap caused by the imaging. The apparatus can be implemented in various quantum computing, sensing, and metrology applications (e.g., in an atomic clock).

Abstract: An apparatus for individually trapping atoms, individually imaging the atoms, and individually cooling the atoms to prevent loss of the atoms from the trap caused by the imaging. The apparatus can be implemented in various quantum computing, sensing, and metrology applications (e.g., in an atomic clock).

Abstract: An apparatus for individually trapping atoms, individually imaging the atoms, and individually cooling the atoms to prevent loss of the atoms from the trap caused by the imaging. The apparatus can be implemented in various quantum computing, sensing, and metrology applications (e.g., in an atomic clock).

Abstract: An apparatus for individually trapping atoms, individually imaging the atoms, and individually cooling the atoms to prevent loss of the atoms from the trap caused by the imaging. The apparatus can be implemented in various quantum computing, sensing, and metrology applications (e.g., in an atomic clock).

Abstract: A touch panel is disclosed. The touch panel comprises a driving electrode including a plurality of driving electrode-cells and a sensing electrode including a plurality of sensing electrode-cells. The driving electrode and the sensing electrode are formed in the same layer of the touch panel. Each of the sensing electrode-cells is configured to envelop up-down-left-right side of a driving electrode-cell which is electrically coupled to the each of the sensing electrode-cells. And a slit is formed at each of the sensing electrode-cells for connecting a driving trace to the driving electrode-cell.

Abstract: An Environmentally stable optical fiber mode-locked laser generating device having an achromatic quarter wave plate is disclosed. An optical fiber unit is formed of a polarization maintaining (PM) optical fiber, and a Bragg grating is formed on a first region from one end in direction to the other end, a gain material is doped on a core of a remaining second region. An optical coupling unit provides a pump laser input to one end of the optical fiber unit, and outputs a laser input from the optical fiber unit. A lens unit converts a laser output from the other end of the optical fiber unit and focuses the laser on a certain regime.

Abstract: Provided is an apparatus for generating a single-polarization mode-locked laser capable of energy control. The apparatus for generating a single-polarization mode-locked laser is configured to adjust at least one of a focal length of a lens focusing laser light on a semiconductor saturable absorber mirror (SESAM) functioning as a saturable absorber, power of pump laser light, and reflectivity of an output coupler (OC) to set fluence, which is defined as energy density per unit area of the laser light incident on the saturable absorber, to be greater than reference fluence, which is energy density per unit area of the laser light incident on the saturable absorber when reflectivity of the saturable absorber is a maximum. Accordingly, it is possible to generate a single-polarization mode-locked laser, of which energy can be controlled, without generating multiple pulses.

Abstract: Provided is an apparatus for generating a single-polarization mode-locked laser capable of energy control. The apparatus for generating a single-polarization mode-locked laser is configured to adjust at least one of a focal length of a lens focusing laser light on a semiconductor saturable absorber mirror (SESAM) functioning as a saturable absorber, power of pump laser light, and reflectivity of an output coupler (OC) to set fluence, which is defined as energy density per unit area of the laser light incident on the saturable absorber, to be greater than reference fluence, which is energy density per unit area of the laser light incident on the saturable absorber when reflectivity of the saturable absorber is a maximum. Accordingly, it is possible to generate a single-polarization mode-locked laser, of which energy can be controlled, without generating multiple pulses.

Abstract: An Environmentally stable optical fiber mode-locked laser generating device having an achromatic quarter wave plate is disclosed. An optical fiber unit is formed of a polarization maintaining (PM) optical fiber, and a Bragg grating is formed on a first region from one end in direction to the other end, a gain material is doped on a core of a remaining second region. An optical coupling unit provides a pump laser input to one end of the optical fiber unit, and outputs a laser input from the optical fiber unit. A lens unit converts a laser output from the other end of the optical fiber unit and focuses the laser on a certain regime.

Abstract: A unidirectionally operating laser apparatus using a semi-monolithic ring cavity having a compact structure capable of achieving a high frequency stability and a high-speed laser frequency tuning and modulation. The laser apparatus includes a laser active medium having a curved surface exhibiting an anti-reflection characteristic for a pump laser beam from a pump laser incident thereon while exhibiting a high reflection characteristic for an oscillating laser beam, a planar surface exhibiting an anti-reflection characteristic for the oscillating laser beam, and an optically-active polarization rotator attached to one side portion of the planar surface. The laser apparatus also includes an output mirror separated from the laser active medium, the output mirror having a curved surface with a coating exhibiting a higher reflectance coefficient for S-polarized beams than that for P-polarized beams, and a piezo-electric transducer.

Abstract: A method of absolutely measuring the diffraction grating spacing and apparatus thereof, which solves the disadvantages of conventional techniques for measuring the diffraction grating spacing, and provides a method utilizing a new laser diffractometer capable of transferring the meter standard to the nanometer region. The invention comprises a first method which utilizes a wavelength stable laser for generating a stable laser beam of wavelength .lambda., 0th and 1st order diffracted beams diffracted at the diffraction grating, and a precision rotary encoder; and a second method utilizing two wave lengths .lambda..sub.1, .lambda..sub.2 of the wavelength stable laser, 0th and 1st order diffracted beams, and a precision rotary encoder.