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Coherent Light Generators > Particular Beam Control Device > Q-switch Q-switchQ-switch patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/08/07 - 20070258493 - Laser power reduction without mode change A laser system comprises a source, a laser medium, first and second mirrors, a Q-switch, and a control system. The source produces input energy. The laser medium converts the input energy to an output beam. The first and second mirrors are disposed on opposing sides of the laser medium. The ... 10/25/07 - 20070248126 - Scribing sapphire substrates with a solid state uv laser A process and system scribe sapphire substrates, by performing the steps of mounting a sapphire substrate, carrying an array of integrated device die, on a stage such as a movable X-Y stage including a vacuum chuck; and directing UV pulses of laser energy directed at a surface of the sapphire ... 08/16/07 - 20070189342 - Suppression of mode-beating noise in a q-switched pulsed laser using novel q-switch device and applications A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation, ... 08/16/07 - 20070189341 - System and method for providing chirped electromagnetic radiation A system and method for controllably chirping electromagnetic radiation from a radiation source includes an optical cavity arrangement. The optical cavity arrangement enables electromagnetic radiation to be produced with a substantially linear chirp rate and a configurable period. By selectively injecting electromagnetic radiation into the optical cavity, the electromagnetic radiation ... 07/05/07 - 20070153843 - Laser control method, laser apparatus, laser treatment method used for the same, laser treatment apparatus A laser controlling method can generate laser of stable laser pulses, and eliminate useless time from a machining procedure. The method uses a gain medium and a Q-switch, and emits exciting light to the gain medium, thereby setting the Q-switch in a continuous oscillation mode, and prepares a given Q-switch ... 07/05/07 - 20070153842 - Laser control method, laser apparatus, laser treatment method used for the same, laser treatment apparatus A laser controlling method can generate laser of stable laser pulses, and eliminate useless time from a machining procedure. The method uses a gain medium and a Q-switch, and emits exciting light to the gain medium, thereby setting the Q-switch in a continuous oscillation mode, and prepares a given Q-switch ... 07/05/07 - 20070153841 - Multi-output harmonic laser and methods employing same A solid-state laser (10) has a laser resonator (20) with output ports (22) at both ends to provide two separate laser micromachining beams (42). A set of wavelength converters (26) can be employed to convert the laser machining beams (42) to harmonic wavelength outputs, thus reducing the risk of damage ... 06/14/07 - 20070133627 - Simultaneously mode-locked, q-switched laser A simultaneously mode-locked, Q-switched laser is configured to prevent loss of mode lock during laser operation. A preferred embodiment prevents loss of mode lock by operating the laser between the Q-switched pulses with a residual level of laser power sufficient to maintain a mode-locked state. The residual laser power output ... 05/24/07 - 20070116068 - System and components for generating single-longitudinal-mode nanosecond laser beam having a wavelength in the range from 760nm to 790nm A laser system and components for generating Single-Longitudinal-Mode (SLM) nanosecond laser beam having a wavelength in the range from 760 nm to 790 nm. The cavity of laser system comprising a front cavity mirror, an Erbium and Ytterbium irons co-doped or Erbium iron doped gain medium, a saturable absorber for ... 05/03/07 - 20070098024 - High power, end pumped laser with off-peak pumping A laser configuration producing up to 100's of Watts of output is provided, based on a solid-state gain medium, a source of pump energy which is detuned from the maximum absorption wavelength for the gain medium, and optics arranged to deliver the pump energy through an end of the gain ... 04/05/07 - 20070076770 - Passive q-switch laser A passive Q-switch for a laser system, and a method for its production. The laser is operative at near infrared wavelength region, including the eye-safe region. The Q-switch includes a saturable absorber based on IV-VI semiconductor nanocrystals (NCs), embedded in a polymer matrix. The NCs preferably include lead selenide, lead ... 03/22/07 - 20070064747 - Passively q-switched microlaser with controllable peak power density Geometrical design of laser microchips is disclosed that allows variation of the optical path length in the different media by simple displacement of the microchip, the movement having a non-zero projection orthogonal to the pump beam. The concept can be implemented to vary optical loss in the lasing cavity, the ... 03/22/07 - 20070064746 - Internal combustion engine The invention relates to an internal combustion engine with a laser ignition device (1), Q-switched, pumped solid-state laser with a pulsed pumped light source (30), a solid laser crystal (2), enclosed in a resonator, a Q-switch (4), for increasing the power density, at least one output mirror (6) and a ... 02/15/07 - 20070036184 - Laser apparatus for material processing Apparatus for material processing, which apparatus comprises a rare-earth doped fibre (1), a laser diode source (2), a short pulse laser (18) and a controller (9), wherein the rare-earth doped fibre (1) is pumped by the laser diode source (2) to provide optical radiation (10), and the optical radiation (10) ... 11/16/06 - 20060256823 - Microresonator, band-pass filter, semiconductor device, and communication apparatus A microresonator includes a plurality of beam-type oscillator elements arranged in parallel and to which DC voltages are applied, wherein the DC voltages are caused to be different among the oscillator elements. ... 10/05/06 - 20060222023 - Stabilization of actively q-switched lasers The invention discloses an actively Q-switched laser with an intracavity nonlinear coupler in which a stable optical frequency converted output is generated. A Gain Fluctuation Insensitivity Condition is defined and described for several examples. The nonlinear coupler with a coupling level which satisfies this Condition permits stable laser operation with ... 09/07/06 - 20060198399 - Optical pulse lasers The present invention provides pulsed lasers which employ carbon nanotubes, particularly layers of carbon nanotubes, as saturable absorbers, mode lockers or for Q-switching elements. The present invention also provides methods and materials for mode-locking and Q-switching of lasers in which carbon nanotubes are employed as non-linear optical materials and/or saturable ... 08/24/06 - 20060187975 - Variable pulse repetition frequency passively q-switched laser A passive Q-switch element is disclosed that permits operating a laser with a variable pulse repetition frequency (PRF). The Q-switch comprises two wedges of material, one made from saturable absorber material, the other from transparent material, with the two wedges mounted together to form a constant optical thickness block. By ... 08/10/06 - 20060176913 - Passively q-switched laser with adjustable pulse repetition rate A method is disclosed for varying a pulse repetition rate of a passively q-switched laser while maintaining other characteristics of the laser radiation. The laser is optically pumped with a sequence of pump pulses which includes alterations between non-zero power levels and is characterized by two adjustable parameters. By simultaneously ... 08/03/06 - 20060171429 - Monoblock laser with reflective substrate In an internal OPO, a substrate comprising a thin film lies along an axis and a first mirror reflects first wavelength light. A gain medium lases and polarizes light entering therein and a Q-switch attenuates and transmits first wavelength light. An HR/HT mirror passes first wavelength light and reflects a ... 07/20/06 - 20060159132 - System and method for a passively q-switched, resonantly pumped, erbium-doped crystalline laser The laser includes a resonant cavity formed between a first mirror and a second mirror. An unsensitized Erbium-doped crystal gain medium for producing laser gain is disposed within the resonant cavity. A saturable absorber is disposed within the resonant cavity. A pump source is positioned to energize the gain medium. ... 06/15/06 - 20060126674 - Lasers for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective pulse energy profile and/or pulse width characteristics imparted by the configurations of the subresonators (12, ... 05/04/06 - 20060092992 - Monoblock laser An improved monoblock laser cavity is made by applying circular apodizing coatings to the various components of the monoblock laser. The apodization of the laser cavity faces improves the beam divergence of the laser and thus, increases brightness, by encouraging only the lower order modes to lase. ... 05/04/06 - 20060092991 - Monoblock laser An improved monoblock laser cavity is made by elongating the Optical parametric oscillation (OPO) cavity. This can be accomplished by changing the coatings on the OPO material and Q-switch and by elongating the OPO cavity to approximately 2 to 3 times the OPO crystal length. The increase in the length ... 04/27/06 - 20060088066 - Q-modulated semiconductor laser A Q-modulated semiconductor laser comprises an optical gain section and an electro-absorptive modulator section, separated by a vertically etched air gap acting as a partially reflecting mirror. The modulator section is placed inside an anti-resonant Fabry-Perot cavity and acts as the rear reflector of the laser. The change of the ... 03/09/06 - 20060050746 - System for alternately pulsing energy of accelerated electrons bombarding a conversion target A RF linear electron accelerator system for generating a beam of accelerated electrons bunched in pulses having different energy spectra from pulse to pulse. The system is operable to generate a beam of high energy X-rays from such beam of accelerated electrons, using a conversion target, with pulses of the ... 02/09/06 - 20060029113 - Method and system for preventing excessive energy build-up in a laser cavity A method and system decrease the amount of undesired laser radiation reaching a workpiece from a laser having a laser cavity and a Q-switch. The laser operates at any given time in one of at least two modes. In a first mode the laser emits pulses at a PRF (pulse ... 01/12/06 - 20060007965 - Passive q-switch modulated fiber laser An all-fiber erbium laser oscillating in a passive Q switched mode. The laser includes a crystal saturable absorber that may be Co2+:ZnSe or Cr2+:ZnSe. In preferred embodiments continuous pumping or short pulse pumping may be utilized. The laser is characterized by low threshold high-power, short-pulse generation. In preferred embodiments the ... 12/15/05 - 20050276286 - Pulsed laser apparatus and method A laser apparatus for generating optical pulses is disclosed, said laser apparatus has a reflecting gain element preferably including a fiber gain medium. The reflecting gain element is coupled to a controllable reflecting/transmitting module having a reflecting state and a transmitting state, wherein the controllable reflecting/transmitting means are operable to ... 12/15/05 - 20050276285 - Actively q-switched laser system using quasi-phase-matched electro-optic q-switch A Q-switched laser system is disclosed. The laser system employs a quasi-phase-matched electro-optic (QPM EO) crystal as the laser Q-switch. When applied with a certain modulating electric field, the QPM EO crystal can function as a polarization rotator to rotate the polarization direction of the resonant laser beam in a ... 09/29/05 - 20050213617 - Suppression of mode-beating noise in a q-switched pulsed laser using novel q-switch device and applications A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation, ... ### FreshPatents.com Support |