Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8174751 | Two frequency resonantly excited MEMS mirror for diode-laser marker Apparatus for marking a bitmap image on tape includes a scanning mirror which is incorporated in a micro-electro-mechanical system (MEMS). The MEMS is torsionally resonant at two frequencies one being about three time the other. The MEMS is excited to resonance by a... | 05/08/2012 |
| 8170073 | Optically-pumped external-cavity surface-emitting semiconductor lasers with front-cooled gain-structures A semiconductor gain-structure functions as a gain-element in a laser-resonator. The gain-structure is bonded to a diamond heat-spreader that is peripherally cooled by a heat-sink configured to allow access to the gain-structure by laser-radiation circulating in the... | 05/01/2012 |
| 8160115 | Two-dimensional diode-laser array with broad-band output It is demonstrated that substantial operating-parameter-dependent temperature-differences can exist between diode-laser bars in pulsed operation of a stack of such bars arranged to provide a two-dimensional array of diode-laser emitters. These differences can produc... | 04/17/2012 |
| 8129684 | Detection of hidden objects by terahertz heterodyne laser imaging A THz-frequency heterodyne imaging method is used to remotely detect objects concealed in or under a person's clothing. One THz-frequency beam is scanned over a person being examined. A portion of the beam penetrates the persons clothing and is reflected by an objec... | 03/06/2012 |
| 8116346 | COlaser output power control during warm-up A CO2 gas discharge laser includes a housing enclosing spaced-apart electrodes and a lasing gas. A laser resonator extends between the spaced-apart electrodes. An RF power supply provides RF power for creating a discharge in the lasing gas, causing laser ... | 02/14/2012 |
| 8050306 | Acousto-optically Q-switched COlaser A pulsed CO2 laser is Q-switched by an intracavity acousto-optic (AO) Q-switch including an AO material transparent at a fundamental wavelength of the laser. In one example the AO material is germanium. ... | 11/01/2011 |
| 8047663 | Beam dump for a very-high-intensity laser beam A beam terminator for a high-power laser beam comprises a thermally conductive body including a beam-trapping chamber. A tapered spiral channel extends into the conductive body for guiding the beam. The beam is partially absorbed while propagating along the channel ... | 11/01/2011 |
| 8000372 | Traveling-wave laser having a resonator including a direction-sensitive interferometer for establishing unidirectional circulation A laser includes a traveling-wave ring-resonator in which one resonator mirror is a mirror of an interferometer arranged such that, when the interferometer is operated in an anti-resonant condition, the mirror has a greater effective reflectivity for clockwise circu... | 08/16/2011 |
| 7991026 | Intracavity frequency-converted optically-pumped semiconductor laser with red-light output In a branched resonator OPS-laser arrangement, a combination of intra-cavity optical parametric generation and intra-cavity sum-frequency mixing provides output radiation in a range between about 550 nanometers about 700 nanometers from an OPS fundamental wavelength... | 08/02/2011 |
| 7970038 | Slab laser with stand-off for ceramic spacers An RF excited gas discharge laser is disclosed including a housing holding the lasing gas. An electrode assembly is mounted within the housing. The electrode assembly includes a pair of elongated planar electrodes mounted in face to face relationship with a narrow g... | 06/28/2011 |
| 7970037 | Arrangement for RF power delivery to a gas discharge laser with cascaded transmission line sections RF power is transmitted to a CO2 gas discharge laser form a source of RF power via a series combination of transmission line sections. The lengths and characteristic impedances of the transmission line sections are selected to transform the impedance of t... | 06/28/2011 |
| RE42499 | System and method for amplifying an optical pulse and pumping laser therefor An efficient, powerful and reliable system for amplifying optical pulses. Seed-pulses are generated by a seed-pulse source and are transmitted to an optical amplifier for amplification. The power for the amplification is provided by a Q-switched, diode-pumped, intra... | 06/28/2011 |
| 7965757 | Thermal distortion compensation for laser mirrors A laser mirror assembly is disclosed with improved pointing stability. An elongated mirror includes a concave reflecting portion. A pair of elongated planar portions extend parallel to the concave reflecting portion on either side thereof. The planar portions are st... | 06/21/2011 |
| 7961370 | Two frequency resonantly excited MEMS mirror for diode-laser marker Apparatus for marking a bitmap image on tape includes a scanning mirror which is incorporated in a micro-electro-mechanical system (MEMS). The MEMS is torsionally resonant at two frequencies one being about three time the other. The MEMS is excited to resonance by a... | 06/14/2011 |
| 7952806 | Multicolor diode-laser module A multi-laser module includes two compartments arranged one above the other. The lower compartment includes four lasers and four corresponding beam-steering mirrors arranged to direct corresponding laser beams into the upper compartment. The upper compartment includ... | 05/31/2011 |
| 7952603 | Diode-laser marker with one-axis scanning mirror mounted on a translatable carriage Apparatus for marking a bitmap image on tape includes a source of a modulatable laser-beam. The beam is directed to an oscillating mirror on a carriage translatable across the width direction of the tape. The oscillating mirror directs the beam to a focusing lens mo... | 05/31/2011 |
| 7952602 | Wide field diode-laser marker with swinging projection-optics Apparatus for laser-marking on tape includes a laser arranged to emit a modulated beam of laser-radiation. Projection-optics are arranged to focus a beam to a spot on the tape. The tape is driven under the focal spot for scanning the beam in the length direction of ... | 05/31/2011 |
| 7944305 | RF pre-amplifiers and power amplifiers An RF amplifier circuit includes a MOSFET connected to an RF output of the circuit via an impedance matching network including an inductor and a tuning capacitor connected in parallel with the inductor and the MOSFET. DC voltage is applied to the MOSFET via a series... | 05/17/2011 |
| 7920606 | Frequency-tripled fiber MOPA Fundamental-wavelength pulses from a fiber a laser are divided into two portions and the two portions are separately amplified. One of the amplified fundamental-wavelength pulse-portions is frequency-doubled. The frequency doubled portion is sum-frequency mixed with... | 04/05/2011 |
| 7916764 | Output power control for harmonic-generating laser In harmonic-generating laser apparatus, plane-polarized fundamental radiation of a laser is converted to harmonic radiation by an optically nonlinear crystal. The power of harmonic radiation generated by the apparatus is selectively varied by selectively rotating th... | 03/29/2011 |
| 7903711 | Separate confinement heterostructure with asymmetric structure and composition A separate confinement heterostructure includes a quantum-well layer bounded by an n-side waveguide layer and a p-side waveguide layer. The waveguide layers guide a lasing mode of the heterostructure. The n-side waveguide layer is composed of indium gallium phosphid... | 03/08/2011 |
| 7903699 | Acousto-optically Q-switched COlaser A pulsed CO2 laser is Q-switched by an intracavity acousto-optic (AO) Q-switch including an AO material transparent at a fundamental wavelength of the laser. In one example the AO material is germanium. ... | 03/08/2011 |
| 7894493 | Ultrashort seed-pulse generating laser with integral pulse shaping An ultrafast laser for delivering ultra-short duration seed-pulses for further amplification has a resonator including negative group delay dispersion (NGDD) mirrors for minimizing increases in the duration of the pulses due to positive group delay dispersion effect... | 02/22/2011 |
| 7891821 | Laser beam transformer and projector having stacked plates An original laser-radiation beam having a symmetrical M2 but poor beam quality is sliced in one transverse axis, by a fanned-out stack of parallel transparent plates, into a plurality of beam slices. The beam-slices are also spread by the stack of plates ... | 02/22/2011 |
| 7889775 | Particle damage protection for high power COslab laser mirrors A CO2 gas discharge laser includes elongated planar live and ground electrodes vertically spaced and electrically insulated from each. The electrodes are spaced apart by ceramic spacer strips arranged along the edges of the electrodes. An auxiliary electr... | 02/15/2011 |
| 7885308 | Frequency-agile RF-power excitation for driving diffusion-cooled sealed-off, RF-excited gas lasers A gas discharge laser includes a laser housing including a laser gas and an electrode-assembly for lighting a discharge in the laser gas. The electrode assembly has a first resonant frequency when the discharge is not lit and a second resonant frequency when the dis... | 02/08/2011 |
| 7881349 | External-cavity optically-pumped semiconductor-laser with a resonator stop An optically pumped semiconductor-laser (OPS-laser) resonator includes an arrangement for delivering optical pump radiation on an OPS-chip to cause fundamental radiation to circulate in the resonator. The resonator includes second and third-harmonic generating cryst... | 02/01/2011 |
| 7843653 | Achromatic flat top beam shaping There is provided an optical system and method for shaping a polychromatic light into a substantially uniform profile beam along a first axis. A polychromatic divergent light with having multiple wavelength components is provided with a dispersion of divergence. A c... | 11/30/2010 |
| 7843479 | Method for providing a plurality of laser-printed labels from a medium supported on a disc A method of printing labels includes supporting a laser sensitive material on a disc and printing label images on the disc with a modulated focused beam from a diode-laser. The label images may be printed in regions of the medium having pre-cut label boundaries. Alt... | 11/30/2010 |
| 7822080 | High power pulsed fiber laser A high power fiber laser includes a pump source optically coupled to a first fiber laser, which is in turn optically coupled to a second fiber laser. The pump source is adapted to generate light, which is received by the first fiber laser and used to generate a firs... | 10/26/2010 |
| 7804879 | Gas laser electrodes shaped in the longitudinal axis A gas discharge laser includes elongated discharge electrodes having an active surface width that varies along the length of the resonator. In one example each of the electrodes is formed by a row of pins having a circular active surface. The pins are diametrically ... | 09/28/2010 |
| 7787506 | Gain-switched fiber laser system This invention discloses a method to control laser dynamics in a gain-switched fiber laser so as to generate stable, clean pulses in an all-fiber format. The gain-switched fiber laser is suitable as a standalone laser source, and as a pump source for harmonic genera... | 08/31/2010 |
| 7782920 | Edge-emitting semiconductor laser with photonic-bandgap structure formed by intermixing A separate-confinement heterostructure, edge-emitting semiconductor laser having a wide emitter width has elongated spaced apart intermixed and disordered zones extending through and alongside the emitter parallel to the emission direction of the emitter. The interm... | 08/24/2010 |
| 7760788 | Bandwidth-limited and long pulse master oscillator power oscillator laser systems Laser systems have a line-narrowed master oscillator and a power oscillator for amplifying the output of the master oscillator. The power oscillator includes optical arrangements for limiting the bandwidth of radiation that can be amplified. The limited amplificatio... | 07/20/2010 |
| 7760772 | Cavity-dumped pulsed solid-state laser with variable pulse-duration In a cavity-dumped, repetitively-pulsed, solid-state laser cavity dumping is protracted over a predetermined time longer than a round-trip time of the resonator of the laser. The cavity dumping is effected by a Pockels cell optical switch. During a dumping period a ... | 07/20/2010 |
| 7756186 | Unstable resonator with variable output coupling Through the use of a relatively inexpensive third mirror on a novel folded hybrid unstable resonator configuration, the optimum output coupling for a given laser design can be explored quickly and easily with a minimum of intracavity mirror alignment. No changes in ... | 07/13/2010 |
| 7756184 | Electrodes for generating a stable discharge in gas laser system Arcing is minimized in a discharge chamber of a gas laser system by utilizing an electrode which comprises a surface portion capable of functioning as one of an anode and a cathode in order to energize a gas mixture in a discharge chamber of the gas discharge laser ... | 07/13/2010 |
| 7756182 | RF excited COslab laser tube housing and electrodes cooling The laser tube housing of a CO2 slab laser is provided with a cooling system in which coolant fluid tubes are inserted into hollowed out portions formed in the longitudinal sidewalls of the laser tube housing; mounting the coolant fluid tubes in this way ... | 07/13/2010 |
| 7755452 | Power combiner An RF power combiner used to combine an output received from a plurality of power amplifiers. The combined output is used to operate a gas discharge laser. In some embodiments, the power combiner consists of a network of transformers that provide an output to a load... | 07/13/2010 |
| 7738515 | Quasi-CW UV laser with low peak pulse-power Laser apparatus is disclosed in which fundamental-wavelength optical pulses delivered from a mode-locked laser resonator at a pulse-repetition frequency (PRF) are converted to harmonic-wavelength pulses in an optical delay loop. One example is disclosed in which the... | 06/15/2010 |
