Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 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 second wavelength. The second resonator includes an optic... | 03/06/2001 |
| 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 beam which is caused to enter the optical wavelength conve... | 02/27/2001 |
| 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 first reflecting portions provided thereon, and the second f... | 01/23/2001 |
| 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 resonator for resonating a light excited by the solid laser medium... | 01/02/2001 |
| 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 vibration. The first embodiment of the present invention incorpor... | 12/26/2000 |
| 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 optical source having a third distinct frequency in the t... | 11/07/2000 |
| 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 through a semiconductor wafer that has a negative nonlinear... | 10/31/2000 |
| 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 splitter 2. The two component beams (T1, T2) are directed ... | 10/24/2000 |
| 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 -DFB laser diode or a waveguide wavelength selective filter, has a mean optical axis defining an optical cavity for substantially confined light propagation wit... | 09/19/2000 |
| 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 and the laser crystal and a second gap between the laser cr... | 07/25/2000 |
| 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 light source for an exposure device for optical lithography a... | 07/11/2000 |
| 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 away from the substrate in a very short time period result... | 06/20/2000 |
| 6061370 | Fourth harmonic generation apparatus A fourth harmonic frequency generating method and apparatus is provided. The system includes within the optical cavity an active laser medium, a second harmonic generator for generating second harmonic frequency of the fundamental frequency emitted by the... | 05/09/2000 |
| 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 caused to make laser oscillation by a resonator structure ... | 05/02/2000 |
| 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 fabrication, by external mechanisms (either optical or ele... | 05/02/2000 |
| 6052393 | Broadband Sagnac Raman amplifiers and cascade lasers This invention describes new developments in Sagnac Raman amplifiers and cascade lasers to improve their performance. The Raman amplifier bandwidth is broadened by using a broadband pump or by combining a cladding-pumped fiber laser with the Sagnac Raman ... | 04/18/2000 |
| 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 a periodic domain reversal structure and disposed in a re... | 04/04/2000 |
| 6047011 | Optical harmonic generator An harmonic generator system for generating at least two output beams (6a, 6b, 6c) of higher order harmonic radiation from an input beam (1) of radiation of frequency ω comprises at least two non linear optical crystals (3a, 3b, 3c) arranged in series. R... | 04/04/2000 |
| 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 transparent for both pump and resonant (signal, idler or both) r... | 03/28/2000 |
| 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 light emanating face are at an angle to the optical axis of t... | 02/22/2000 |
| 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 wavelength converting element, and an output mirror, which a... | 02/15/2000 |
| 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 angled surface of either the laser material or the nonlinea... | 02/15/2000 |
| 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 grating. The laser uses a folded imaging arrangement with nonover... | 02/08/2000 |
| 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 hygroscopic optical material for appropriate surface figure or... | 02/01/2000 |
| 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 amplifiers at a signal wavelength (SW), while still preserving a ... | 01/11/2000 |
| 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 plurality of wavelengths and generating up to a high laser ... | 01/04/2000 |
| 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 nonlinear medium to produce a first and second parametrical... | 12/07/1999 |
| 5999325 | Optical device and method of manufacturing the same An optical device includes a block of optical material. The block includes a first and second end face, and a portion of the first end face includes at least one convex arcuate portion.... | 12/07/1999 |
| 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 complementary wave defined by two same-axis mirrors situated on... | 11/30/1999 |
| 5991490 | Optical waveguide and optical wavelength conversion device An optical waveguide of the present invention includes: an optical material; an optical waveguide layer formed in the optical material; and a cladding layer formed on a surface of the optical waveguide layer, wherein the optical waveguide layer is capable... | 11/23/1999 |
| 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 generating device includes a first laser light source 31, a second ... | 11/23/1999 |
| 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 optical resonator comprising mirrors sandwiching the light emit... | 11/16/1999 |
| 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 cell has a positive susceptibility which self-focuses intens... | 11/16/1999 |
| 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 in combination with a surrounding glass having an index o... | 11/09/1999 |
| 5978392 | Wavelength-conversion laser In wavelength-conversion laser, a solid state laser crystal is pumped with light and the wavelength of a solid laser beam emitted from the solid state laser crystal is converted by a nonlinear optical crystal disposed in a resonator for realizing type-I p... | 11/02/1999 |
| 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 into an output beam having two linearly-orthogonally, pol... | 10/19/1999 |
| 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 the laser crystal itself, and an aperture restricting the re... | 10/12/1999 |
| 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 fiber where it undergoes additional modulation by the process... | 10/05/1999 |
| 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 harmonic frequencies of the fundamental mode frequencies. An asso... | 09/28/1999 |
| 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 according to the present invention wherein a resonator is compo... | 09/14/1999 |
