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7630425 |
Optical beam steering for tunable laser applications
Apparatus is disclosed for optically steering an optical beam, the apparatus comprising a pair of optical prism components arranged together with a diffraction grating so as to allow efficient...
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7620080 |
Laser pulse conditioning
A light pulse conditioning apparatus has at least first and second curved reflective surfaces that share a common focus and a light-redirecting element disposed between the first and second curved...
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7609731 |
Laser system using ultra-short laser pulses
A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present...
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7602825 |
Tunable passively mode-locked lasers with phase-lock feedback for low timing jitters
Techniques and devices to stabilize a passively mode-locked laser against the timing jitter by using a feedback control signal based on a signal component at a high harmonic frequency of the laser...
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7593441 |
Bragg fibers in systems for the generation of high peak power light
The present invention generally concerns the use of Bragg optical fibers in chirped pulse amplification systems for the production of high-pulse-energy ultrashort optical pulses. A gas-core Bragg...
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7593440 |
MOPA laser apparatus with two master oscillators for generating ultraviolet radiation
Laser apparatus including two different, pulsed MOPAs, one having a fundamental wavelength of 1064 nm and the other having a fundamental wavelength of 1564 nm, provide trains of optical pulses. The...
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7589337 |
LPP EUV plasma source material target delivery system
An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source...
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7583710 |
Laser and environmental monitoring system
A laser and monitoring system is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention...
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7573918 |
Dispersion compensated mode-locked pulsed lasers and optical amplifiers
Techniques, apparatus and systems for providing compensation mechanisms for mode-locked lasers and optical amplifiers and a dispersion compensation mechanism to allow a mode-locked laser and an...
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7567596 |
Control system and apparatus for use with ultra-fast laser
A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control...
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7564880 |
Laser intra-cavity electronic wavelength tuner
An apparatus for adjusting the wavelength of a laser capable of lasing at multiple wavelengths by using a single acousto-optical modulator and a pair of optical reflectors inside a laser cavity. By...
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7561807 |
Use of beacons in a WDM communication system
A WDM communication system having two optical-frequency comb sources (OFCSs) that are substantially phase-locked to one another, with one of these OFCSs used at a transmitter to produce a WDM...
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7548570 |
Laser power control apparatus
In a laser power control apparatus for controlling a laser power of a combination drive, first laser light Lc applied onto a first optical disk and second laser light Ld applied onto a second...
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7532649 |
Optical cavity for coherent superposition of optical pulses
An apparatus is described that includes an optical storage cavity comprising a planar mirror and a spherically curved mirror that form an optical path therebetween. A pump laser introduces optical...
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7522642 |
Method and system for laser amplification using a dual crystal Pockels cell
A system for laser amplification includes a dual-crystal Pockels cell which is used to control emission of laser pulses from an ultra-fast laser. The Pockels cell is constructed to enable...
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7519252 |
Laser annealing apparatus
A laser annealing apparatus comprises a laser oscillator having a Q switching action, one or a plurality of partially reflective mirrors for split a laser beam emitted from the laser oscillator...
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7515618 |
High power laser using controlled, distributed foci juxtaposed in a stimulate Brillouin scattering phase conjugation cell
In the laser system of the present invention, an acoustic grating (AG) established in an SBS cell by an initial laser pulse is forced into oscillation from noise. Since the process is nonlinear,...
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7512161 |
Device, method and system for generating an infrared image
The infrared image generation device, method and system generate realistic infrared images to accurately test infrared sensors. The device and system include a laser light source, at least one...
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7508849 |
Wavelength tunable laser device
A semiconductor optical amplifier, an acousto-optic tunable filter, a phase shifter, a lens, and an internal etalon are arranged in a resonator. Outside the resonator, two lenses, two beam...
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7502392 |
Laser oscillator
The present invention provides a laser oscillator using an electroluminescent material that can enhance directivity of emitted laser light and resistance to a physical impact. The laser oscillator...
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7502176 |
Combined laser source having deflection member
A combined laser source includes: a plurality of semiconductor lasers which contain emission elements emitting a plurality of laser beams and being separately and hermetically sealed; a plurality...
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7460566 |
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...
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7450618 |
Laser system using ultrashort laser pulses
A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present...
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7450240 |
Laser device coupled to a cavity by optical feedback for detecting gas traces
A device of detection of gas in trace amounts by a semiconductor laser coupled to a resonant optical cavity containing a chemical species to be analyzed. The device comprises a resonant optical...
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7433372 |
Device and method to stabilize beam shape and symmetry for high energy pulsed laser applications
A beam mixer for increasing intensity symmetry along a selected axis of a beam (wherein the beam extends from a first edge to a second edge along the axis) is disclosed and may include a plurality...
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7426229 |
Line narrowing module, light source of exposure apparatus comprising the same, and method of producing exposure light using line narrowing
A line narrowing module includes an elliptical mirror, a diffraction grating disposed at a first focus of the mirror for separating an incident beam into different lines, and a laser beam...
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7421166 |
Laser spark distribution and ignition system
A laser spark distribution and ignition system that reduces the high power optical requirements for use in a laser ignition and distribution system allowing for the use of optical fibers for...
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7409134 |
Control of output beam divergence in a semiconductor waveguide device
A semiconductor laser device incorporates a beam control layer for reducing far field and beam divergence. Within the beam control layer, a physical property of the semiconductor material varies as...
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7388890 |
Piezoelectric-tuned external cavity laser
A tunable laser comprising: a foundation including a first side and an oppositely facing second side and including a hole extending from the first side to the second side; a tuning assembly...
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7376160 |
Slab laser and method with improved and directionally homogenized beam quality
A laser resonator for generating a laser beam having beam quality along two transverse axes that is determined primarily by the mode discrimination characteristics of one axis. The apparatus...
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7372878 |
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...
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7372056 |
LPP EUV plasma source material target delivery system
An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source...
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7352782 |
Surface emitting semiconductor laser and communication system using the same
A surface emitting semiconductor laser includes a laminate of semiconductor layers emitting multimode laser light, and a block member blocking light of a specific mode among the multimode laser...
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7310357 |
Providing low-coherence light
The invention features an apparatus and an associated method for illuminating a target area. The apparatus includes reflectors defining a first optical cavity. The first optical cavity defines a...
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7277460 |
Generation of optical filaments by use of localized optical inhomogeneities
Optical filaments are formed controllably in a gaseous medium such as air. A phase plate introducing a phase discontinuity or other localized optical inhomogeneity is introduced into the path of...
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7266072 |
Semiconductor laser unit and optical head device
A semiconductor laser unit includes a plurality of semiconductor laser elements arranged parallel with one another in a laser beam-emitting direction, and a base for positioning and fixing the...
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7260131 |
Symmetrization device and laser diode system provided with the same
A symmetrization device and laser diode system using such a device is shown. The device has adjacent lens components transforming beamlets from a laser diode array. Each lens component has input...
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7251260 |
Wavelength-locked fiber-coupled diode-laser bar
In apparatus for wavelength stabilizing and spectrally narrowing an output beam of a diode-laser, a cylindrical lens is arranged to collimate the beam in the fast axis of the diode laser without...
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7218650 |
Wavelength reference filter
A wavelength reference filter for receiving an input signal and producing a filtered output signal is provided. The operation of the filter is independent of the angle of incidence of the input...
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7218649 |
Laser beam containment system
A laser beam containment system includes a number of optics that direct a laser beam produced by a laser beam source along a path to a point of application of the laser beam. One or more hollow...
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7199330 |
Systems and methods for forming a laser beam having a flat top
Multiple laser beams, each having a shape such as a Gaussian profile, can be incoherently combined to obtain a shaped, flat top laser beam. The combined laser beams can provide power levels...
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7170912 |
Laser drilling system and method for flexible printed circuit board
A laser drilling system for flexible printed circuit board includes a first mirror, a second mirror, a laser crystal, a third harmonic generator and a second harmonic generator. The first mirror...
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7151788 |
Laser processing device
The invention relates to a laser processing device that can change the diameter of a beam spot on an object to be processed, without using a mechanism for changing a distance between a condensing...
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7138622 |
Method and apparatus for monitoring light beams
An apparatus and method for monitoring light beams comprising a reflector for passing at least partially through the beam to reflect a sample of the beam and at least one sensor arranged to receive...
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7133427 |
Phase conjugate laser and method with improved fidelity
A spatial filter adapted to increase the angular spread of non-conjugated energy in a beam and suppress this energy to improve the efficiency of a phase conjugate system. In the illustrative...
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7130322 |
Wavelength tunable laser and method of controlling the same
There is provided a phase control portion for controlling phase of a laser beam resonated in a resonator based on detected results by two optical detectors. The phase control portion adjusts the...
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7123402 |
Cloning optical-frequency comb sources
Method and apparatus for creating a clone relationship between two or more optical-frequency comb sources (OFCSs). In one embodiment, the invention is an apparatus having (i) first and second...
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7116687 |
High repetition rate passively Q-switched laser for blue laser based on interactions in fiber
A laser apparatus is disclosed. The apparatus includes a Neodymium-doped lasing material having first and second surfaces and a passive Q-switch optically coupled to the second surface. The...
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7112885 |
System, method and apparatus for improved electrical-to-optical transmitters disposed within printed circuit boards
The present invention provides a system, method and apparatus for improved electrical-to-optical transmitters ( 100 ) disposed within printed circuit boards ( 104 ). The heat sink ( 110, 200 ) is a...
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7106763 |
Wavelength control for cavity ringdown spectrometer
A cavity ring-down spectrometer includes:
a) multiple detectors for monitoring the intensity of the radiation emitted from the cavity and the wavelength of the radiation injected into the...
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