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...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 6568105 | External cavity laser type light source An external cavity laser type light source including a light emitting element, a wavelength selection element for selecting a wavelength of light emitted from the light emitting element and for returning light to the light emitting element, and an optical... | 05/27/2003 |
| 6567456 | Method and apparatus for achieving polarization in a laser using a dual-mirror mirror mount A novel dual-mirror mirror mount assembly for achieving polarization of a light beam in a gaseous laser is presented. The assembly includes a mirror mount structure open at one end and having a hollow cavity therein. A pair of mirrors are hard-sealed to t... | 05/20/2003 |
| 6567451 | Narrow band excimer or molecular fluorine laser having an output coupling interferometer An excimer or molecular fluorine laser includes a discharge chamber filled with a gas mixture, multiple electrodes within the discharge chamber connected to a power supply circuit for energizing the gas mixture, and a resonator including the discharge cha... | 05/20/2003 |
| 6567430 | Raman oscillator including an intracavity filter and amplifiers utilizing same In one embodiment, a Raman oscillator includes at least one laser cavity and a distributed gain fiber positioned in the at least one laser cavity having a single spatial mode over a pumping wavelength to a signal wavelength. The oscillator also includes a... | 05/20/2003 |
| 6560268 | Resonator mirror with a saturable absorber A resonator mirror with a saturable absorber for a laser wavelength λL formed of a series of layers of a plurality of semiconductor layers on a substrate, wherein a Bragg reflector formed of a plurality of alternately arranged layers comprisin... | 05/06/2003 |
| 6560254 | Line-narrowing module for high power laser An excimer or molecular fluorine laser includes a gain medium surrounded by a resonator and including a line-narrowing module preferably including a prism beam expander and one or more etalons and/or a grating or grism within the resonator. The material o... | 05/06/2003 |
| 6560249 | Laser source with integral filtering of the amplified spontaneous emission Laser source comprising a first active arm extending from a first end reflector up to a dispersing system grid and containing an amplifier medium that produces a first luminous beam. A second passive arm extends from the grid to a second end reflector, th... | 05/06/2003 |
| 6560267 | Solid-state laser and optical transmitter In the wavelength-division-multiplexed optical transmission, laser diodes of the number of multiplicity are disposed as a light source to configure a transmitter. However, since this method requires a large number of light sources and highly precise wavel... | 05/06/2003 |
| 6560269 | Fluorine laser device Fluorine laser device capable of obtaining laser light with strong monochromatic property and large power is provided. For this purpose, the fluorine laser device is in a fluorine laser device including a laser chamber (2) in which a laser medium includin... | 05/06/2003 |
| 6556607 | Temperature compensated lasers A novel approach for providing temperature compensation for semiconductor lasers is disclosed. This approach utilizes reflectivity characteristics in the at least one of the mirrors of the semiconductor laser to provide temperature compensation to the dev... | 04/29/2003 |
| 6556611 | Wide stripe distributed bragg reflector lasers with improved angular and spectral characteristics A diode laser comprises a laser cavity defining a linear optical-path axis, and a current-pumped stripe region, said current-pumped stripe region being disposed within said laser cavity. The laser cavity includes an output surface perpendicular to the opt... | 04/29/2003 |
| 6556608 | Small format optical subassembly A small format optoelectronic package or device includes a non-electrically conductive substrate partially covered by an electrically conductive can. The electrically conductive can has a transparent element affixed to an aperture of the electrically cond... | 04/29/2003 |
| 6556599 | External cavity laser using angle-tuned filter and method of making same An external cavity laser comprises a light source unit, preferably comprising a semiconductor light source having internal optical gain and a collimating lens, for supplying substantially collimated light to a retroreflector via an angle-tuned filter exte... | 04/29/2003 |
| 6553050 | Narrow band excimer or molecular fluorine laser having an output coupling interferometer An excimer or molecular fluorine laser includes a discharge chamber filled with a gas mixture, multiple electrodes within the discharge chamber connected to a power supply circuit for energizing the gas mixture, and a resonator including the discharge cha... | 04/22/2003 |
| 6538816 | Micro-electro mechanical based optical attenuator The present invention relates to a micro-electromechanical optical attenuator and a method of operating the same. In prior art attenuators, the attenuation obtained from a deflection angle does not change uniformly over a range of interest. In addition, o... | 03/25/2003 |
| 6534798 | Surface plasmon enhanced light emitting diode and method of operation for the same The emission properties of light-emitting diodes are enhanced by coupling to surface plasmons. The semiconductor emitter layer of the light-emitting diode is thinner than λ/2 and is sandwiched between two metal films. A periodic pattern is defined in the... | 03/18/2003 |
| 6532247 | Laser wavelength control unit with piezoelectric driver An electric discharge laser with fast wavelength correction. Fast wavelength correction equipment includes at least one piezoelectric drive and a fast wavelength measurement system and fast feedback response times. In a preferred embodiment, equipment is ... | 03/11/2003 |
| 6529540 | Variable output coupling laser 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 enoug... | 03/04/2003 |
| 6529327 | Partly reflecting optical component and laser source incorporating such a component A partially reflecting optical component (11) generating, from an incident beam (12), two secondary beams, one of them being reflected (13), the other one being transmitted (14). According to the invention, it comprises a first wholly reflecting planar fa... | 03/04/2003 |
| 6526086 | Band narrowing laser A band narrowing laser having a band narrowing module which narrows by a band narrowing element a band of the laser beam generated from a laser medium, in which wavefront correction means (10) that corrects the wavefront of an incident laser beam and and ... | 02/25/2003 |
| 6526080 | Bidirectional light transmitting and receiving device A bidirectional light transmitting and receiving device includes a first light transceiver having a first light emitter and a first light receiver for receiving a light beam entering around the first light emitter, and a second light transceiver having a ... | 02/25/2003 |
| 6526088 | Alignment-free solid laser apparatus The alignment-free solid laser of the invention is characterized in that, an orientation prism having three inner surfaces perpendicular to one another, a bottom of equilateral triangle or circle shape, a corner apex located on the axis of the active mate... | 02/25/2003 |
| 6519269 | Wavelength tuneable laser source A wavelength tuneable laser source with an external cavity and utilizing an interferometer having a reciprocal output and a non-reciprocal output. The laser source includes an amplifier medium, a cavity comprising two reflectors and a source beam extracti... | 02/11/2003 |
| 6498803 | Narrow band excimer or molecular fluorine laser with adjustable bandwidth A line-narrowed excimer or molecular fluorine laser system includes a gain medium surrounded by a resonator for generating a laser beam, a discharge circuit including a plurality of electrodes for energizing the gain medium and a line-narrowing unit withi... | 12/24/2002 |
| 6496528 | Line narrowing unit with flexural grating mount A grating based line narrowing device for line narrowing lasers producing high energy laser beams. Techniques are provided for minimizing adverse effects of heat produced by the laser beam inside the line narrowing device. A flexural grating mount is prov... | 12/17/2002 |
| 6495381 | Apparatus and method for forming aperture of vertical cavity surface emitting laser by selective oxidation An apparatus and method for forming an aperture of a vertical cavity surface emitting laser (VCSEL) by selective oxidation, in which resonance peak variations during the formation of the aperture can be measured using an optical spectrum analyzer, so that... | 12/17/2002 |
| 6493374 | Smart laser with fast deformable grating A smart laser having automatic computer control of pulse energy, wavelength and bandwidth using feedback signals from a wavemeter. Pulse energy is controlled by controlling discharge voltage, wavelength by controlling the position of an RMAX mi... | 12/10/2002 |
| 6493365 | Passive thermal stabilization of the optical path length in a tunable laser The present invention provides an apparatus for passively stabilizing the optical pathlength in tunable lasers. Lasers stabilized using the passive stabilization apparatus exhibit reduced mode hop and increased wavelength stability during temperature vari... | 12/10/2002 |
| 6487232 | System and method for suppressing multimoding behavior of lasers The present invention reduces multimoding of light generated by lasers. An asymmetric dispersion enhancer is included in a laser cavity to increase the asymmetric dispersion of the light amplified in the cavity. As a result, the side modes of the light pa... | 11/26/2002 |
| 6487228 | Narrow band excimer or molecular fluorine laser with adjustable bandwidth A line-narrowed excimer or molecular fluorine laser system includes a gain medium surrounded by a resonator for generating a laser beam, a discharge circuit including a plurality of electrodes for energizing the gain medium and a line narrowing unit withi... | 11/26/2002 |
| 6487224 | Laser diode assembly A laser diode assembly capable of guiding a laser beam to a predetermined direction by utilizing a reflecting surface which has an arbitrary angle with respect to a sub-mount. The assembly includes a first unit, a second unit, and a laser diode. The first... | 11/26/2002 |
| 6487003 | Optical interaction device A laser beam is subjected to repeated reflection by a plurality of concave mirrors disposed in a confronting arrangement. Reflecting paths are centralized to form an interactive region of a high photon density. An interaction target such as gas, liquid, a... | 11/26/2002 |
| 6466703 | Method and apparatus for electro-optic delay generation of optical signals An optical delay generator includes a waveguide made from electro-optically active material which contains a chirped distributed Bragg reflector. An electric field generated across the waveguide causes the index of refraction within the waveguide to chang... | 10/15/2002 |
| 6466604 | Optical component for generating pulsed laser radiation The optical component designed preferably for use in a laser cavity for the generation of a pulsed laser beam, especially a mode-coupled beam in the microsecond to the femtosecond range, contains a coating ensemble that acts as a saturable absorber, conta... | 10/15/2002 |
| 6466603 | Low loss resonator A Low loss resonator is provided, which consist of two confocal parabolic reflectors and two flat reflectors forming a closed cavity capable of direct to the output window, stimulated emissions generated in the axes parallels to the axis of symmetry and t... | 10/15/2002 |
| 6466598 | F2-laser with line selection An F2 -excimer laser has multiple closely-spaced spectral lines of interest around 157 nm, and one of the lines is selected by wavelength selection optics. The wavelength selection optics of a first preferred embodiment include a birefringent B... | 10/15/2002 |
| 6462878 | Double chirped mirror The invention is a double chirped mirror and a method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising specifying a design including a plurality of layers, the plurality of layers being transparent to ... | 10/08/2002 |
| 6455876 | Semiconductor radiative device A semiconductor radiative device comprises a layered film comprised of a low-refraction first dielectric film and a high-refraction second dielectric film having a refraction index greater than that of the first dielectric film, and formed on at least one... | 09/24/2002 |
| 6452720 | Light source apparatus, optical amplifier and optical communication system A light source apparatus suitable for use for evaluation of an optical device and for production of pump light for an optical amplifier. The apparatus includes a light emitting element having a gain band and a band reflection filter optically connected to... | 09/17/2002 |
| 6449301 | Method and apparatus for mode locking of external cavity semiconductor lasers with saturable Bragg reflectors External cavity semiconductor lasers using a saturable Bragg reflector as an external reflector are mode locked and produce output pulses of 1.9 ps from a semiconductor lasers without dispersion compensation. By coupling the output to a standard single mo... | 09/10/2002 |
