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6233025 |
Process and apparatus for generating at least three laser beams of different wavelength for the display of color video pictures
In a process for generating at least three laser beams of different wavelengths for displaying color video pictures, a pulsed laser is used to generate light. The light output of the pulsed laser...
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6229047 |
Dipole aligned NLO chromophores
A nonlinear optical material which is characterized as having a relatively high macroscopic dipole moment achieved through the generally parallel packing of dipolar molecules in a relative...
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6215800 |
Optical parametric oscillator with dynamic output coupler
The present invention relates generally to an apparatus that increases the conversion efficiency of optical parametric oscillators. The apparatus comprises an intracavity difference-frequency...
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6198756 |
CW far-UV laser system with two active resonators
A laser system includes two separate active laser-resonators. A first of the laser-resonators delivers laser-radiation at a first wavelength, and the second generates fundamental laser-radiation at...
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6195198 |
Optical wavelength conversion system
An optical wavelength conversion system includes an optical waveguide type optical wavelength conversion element having periodic domain reversals, and a semiconductor laser which generates a laser...
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6192058 |
Multiwavelength actively mode-locked external cavity semiconductor laser
A multiwavelength mode-locked (MWML) angled-stripe SOA laser that emits multiple discrete groups of wavelengths simultaneously in a short time interval, where each group is located at a wavelength...
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6178035 |
Optical device and method of manufacturing the same
An optical device includes a light transmitting non-linear optical material having a first face and a second face. The first and second faces oppose each other. The first face has a plurality of...
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6169755 |
Laser-diode-pumped solid state laser and an optical system using the same
A laser-diode-pumped solid state laser comprises: a solid laser medium; a laser-diode capable of producing a laser beam for exciting the solid laser medium; a pair of mirrors which forms a...
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6167067 |
Optical parametric oscillator with monolithic dual PPLN elements with intrinsic mirrors
The present invention relates generally to an apparatus that increases the conversion efficiency of optical parametric oscillators and also reduces overall system size and susceptibility to...
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6144679 |
Method and apparatus for providing a coherent terahertz source
A coherent optical source, having a center frequency in the terahertz band can be generated. Two coherent optical sources of different frequencies can be mixed in a nonlinear crystal to generate an...
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6141362 |
Reduction of B-integral accumulation in lasers
A pulsed laser is provided wherein the B-integral accumulated in the laser pulse is reduced using a semiconductor wafer. A laser pulse is generated by a laser pulse source. The laser pulse passes...
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6137820 |
Optically pumped laser
Optically pumped laser wherein the light beam P, which comes, for example, via light conductors 4 from the pump light source 200, is split into two component beams (T1, T2), for example, by a beam...
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6122299 |
Angled distributed reflector optical device with enhanced light confinement
A optical medium, such as an angled distributed reflector, e.g., an angular grating, or α-DFB laser diode or a waveguide wavelength selective filter, has a mean optical axis defining an optical...
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6094445 |
High-efficiency cavity doubling laser
A high-efficiency cavity doubling laser according to the invention contains a laser diode, a laser crystal and a non-linear crystal, is characterized in having a first gap between the laser diode...
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6088379 |
Ultraviolet laser apparatus and semiconductor exposure apparatus
An ultraviolet laser apparatus which generates laser light at 193 nm to 213 nm with high temporal and spatial coherence and relatively high power is disclosed. The UV laser apparatus provides a...
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6078600 |
Generation and use of high power 213 nm and 266 nm laser radiation and tunable 210-400 nm laser radiation with BBO crystal matrix array
A 213 nm laser beam is capable of single photon ablative photodecomposition for the removal of a polymer or biological material substrate. Breaking the molecular bonds and displacing the molecules...
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6058127 |
Tunable microcavity and method of using nonlinear materials in a photonic crystal
A nonlinear dielectric material is incorporated within a photonic crystal as a means of changing the refractive index of a defect. In this way, the resonant frequency can be easily adjusted, after...
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6058126 |
Laser-diode-pumped solid state laser and radiation image read-out system
In a laser-diode-pumped solid state laser, a solid laser crystal is pumped by a pumping laser beam emitted from a laser diode and a harmonic of light emitted from the pumped solid laser crystal is...
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6047009 |
Wavelength conversion laser
In a wavelength conversion laser, a laser crystal is pumped by light and the wavelength of a solid state laser beam emitted from the laser crystal is converted by a nonlinear optical crystal having...
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6047011 |
Optical harmonic generator
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6044094 |
Laser system with optical parametric oscillator
A laser device which is tunable within the mid-IR range is provided. The device includes a thin etalon, formed as an uncoated plane-parallel plate of high refractive index material, which is...
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6028869 |
Polarization control element and solid state laser
A polarization control element for controlling the direction of polarization and the longitudinal mode of a laser is formed by cutting a birefringent crystal so that its light incident face and...
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6026102 |
Multi element single mode microchip lasers
A microchip laser is formed from at least one portion of laser material and at least one nonlinear crystal. The laser material and nonlinear crystal are in physical contact with each other and an...
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6026101 |
Solid-state laser apparatus
A high powered solid-state laser apparatus that is small in size and low in cost. The solid-state laser apparatus includes a semiconductor laser, a laser crystal, an etalon element, a non-linear...
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6023480 |
Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions
A compact multiwavelength laser arrangement includes a reflective waveguide grating combined with two arrays of reflecting waveguide elements located in separate focal regions formed by the...
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6021142 |
Optical surface treatment
A method of hygroscopic optical material fabrication comprising the steps of cutting a hygroscopic optical material to generate an optical substrate of appropriate dimensions and polishing the...
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6014249 |
Apparatus and method for the generation of high-power femtosecond pulses from a fiber amplifier
An apparatus generates femtosecond pulses from laser amplifiers by nonlinear frequency conversion. The implementation of nonlinear frequency-conversion allows the design of highly nonlinear...
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6011809 |
Multi-wavelength laser apparatus and continuous variable wavelength laser apparatus
It is an object of the present invention to provide a multi-wavelength laser apparatus and a continuous variable wavelength laser apparatus capable of simultaneously outputting laser beams with a...
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5999547 |
Tunable optical parametric oscillator
An optical parameter oscillator system is proposed for use in a continuous wave pump laser system having a single-frequency pump source. The system comprises a single-resonance resonator having a...
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5995522 |
Pulsed optical parametric oscillator
A pulsed optical parametric oscillator comprising a spectrally pure source or emitting pumping wave pulses, a non-linear crystal to which the pumping wave is applied, a resonant cavity for the...
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5991316 |
Laser light emitting device, laser beacon device and laser imager display device
A laser beam generating device which, by addition of a simplified structure, can enlarge the spectral width of the laser light and lower the coherence to a moderate value. The laser light...
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5987041 |
Laser apparatus and method for emission of laser beam using same
A laser apparatus capable of emitting a laser beam upon wavelength conversion and intensity modulation, which comprises a fundamental wave resonance means comprising a light emitting part, an...
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5986828 |
Optical power limiter utilizing nonlinear refraction
A power limiter is provided consisting of two cells of optically transparent material having a low index of refraction, but a large third order susceptibility to electric polarization. The input...
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5982788 |
Semi-monolithic cavity for external resonant frequency doubling and method of performing the same
The fabrication of an optical cavity for use in a laser, in a frequency doubling external cavity, or any other type of nonlinear optical device, can be simplified by providing the nonlinear crystal...
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5970077 |
Apparatus for efficiently transforming a single frequency, linearly polarized laser beam into principally two orthogonally polarized beams having different frequencies
Electro-optical devices comprising a multifaceted anisotropic acousto-optical crystal for transforming a single-frequency beam comprising two individual linearly-orthogonally, polarized input beams...
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5966390 |
Passively mode-locked short pulse laser
In a passively mode-locked short pulse laser arrangement including a laser resonator to which a pump beam is supplied, a titanium-sapphire (Ti:S) laser crystal, an optical Kerr element formed by...
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5963567 |
Multi-wavelength laser source
A light source for generating many precisely spaced wavelength channels, based on the periodic modulation of light. CW light is periodically amplitude modulated and then coupled to a non-linear...
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5960015 |
Two mode amplitude-stable intracavity-doubled laser and method
A two-mode, amplitude-stable laser is disclosed which provides two-mode operation (i.e., two fundamental lasing modes of similar, but distinct frequencies), resulting in low noise output at...
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5953154 |
Optically parametric oscillator and wavelength-tunable laser system
An object of the present invention is to speed up a wavelength tuning speed thereby varying both wavelengths of signal light and idler light at high speed. The optically parametric oscillator...
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5943350 |
Laser light generating apparatus
An object of the invention is to provide a laser light generating apparatus capable of minimizing loss in a resonator to give a high efficiency of wavelength conversion. A resonator comprises two...
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5940417 |
CsB.sub.3 O .sub.5 crystal and its nonlinear optical devices
The present invention relates to single crystals of CsB 3 O 5 having large dimension and high quality which can be grown by pulling methods. The single crystals of CsB 3 O 5 are useful as NLO...
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5923685 |
Wavelength selectable laser oscillator in wavelength tunable laser
An object of the present invention is to provide a wavelength selectable laser oscillator in wavelength tunable laser by which high-speed tuning of wavelength can be achieved while utilizing...
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5920588 |
Method and device for generation of phase conjugate light and wavelength conversion, and system having the device
Methods and devices for generation of phase conjugate light and wavelength conversion, and systems each having the device. In a basic structure of the present invention, a signal light beam is...
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5898718 |
Method and apparatus for optimizing the output of a multi-peaked frequency harmonic generator
A method and devices for obtaining optimized output harmonic frequency light at a plurality of peak frequencies from a nonlinear ferroelectric generator optical device by controlling the overall...
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5889798 |
Active-switching laser and microchip laser
The invention relates to a laser cavity having an active laser medium and two mirrors forming a Fabry-Perot cavity, characterized in that the cavity is at the optical stability limit and in that...
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H001791 |
Stimulated Brillouin scattering for fiber-optic links
An attenuator/filter is disclosed that is inherently tuned and provides for a stimulated Brillouin scattering effect having a predetermined threshold that fixes the output thereof at a predefined...
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5870421 |
Short pulsewidth, high pulse repetition frequency laser system
A laser system capable of high speed silicon wafer dicing is disclosed. A laser with high average power, high repetition rate, ultra-short pulsewidth, and excellent beam quality is described. This...
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5862163 |
Apparatus for generating ultraviolet laser radiation
An apparatus for generating ultraviolet laser radiation according to the present invention includes a laser light source and a frequency conversion device made of a nonlinear optical crystal on...
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5856996 |
Compact efficient solid state laser
The invention provides a compactly built solid state laser, which can be pumped by high power semiconductor laser diodes and uses two or more laser crystals as the laser gain or amplification...
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5850407 |
Third-harmonic generator with uncoated brewster-cut dispersive output facet
A third-harmonic crystal has a Brewster-cut dispersive output surface for separating the p-polarized fundamental and third-harmonic beams without introducing losses into the beams. The output...
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