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| Number | Title | Issue Date |
| 5386427 | Thermally controlled lenses for lasers An apparatus and method for controlling the propagation path of a light beam are disclosed. A lens material having a temperature-dependent index of refraction is positioned in the path of the light beam. A heat source is disposed on one face of the lens m... | 01/31/1995 |
| 5384657 | Laser beam expanders with glass and liquid lens elements Design forms are disclosed for 5× and 10× laser beam expanders whose lens elements consist of glass and liquid optical materials, which provide diffraction-limited performance without refocussing over a wavelength range from 0.4 micron to 0.8 micron.... | 01/24/1995 |
| 5381438 | Laser diode unit including an adjusting member provided with a through hole A laser diode unit, having advantages of dissipating heat quickly, being capable of protecting itself from being destroyed by an incidental electrostatic or electric voltage, being effective to deal with the operations of aligning, positioning, adjusting,... | 01/10/1995 |
| 5379315 | Semiconductor laser pumped multiple molecular gas lasers A gas laser cavity 44 comprises a first (pumped) molecular gas 52 and a second (lasing) molecular gas 52, such as Hydrogen Halides. The first gas is pumped by a plurality of semiconductor lasers 20 which provide light carried along optical fibers 26 that ... | 01/03/1995 |
| 5373396 | Laser beam expanders with plastic and liquid lens elements Design forms are disclosed for 5X and 10X laser beam expanders whose lens elements consist only of plastic and liquid optical materials, which provide diffraction-limited performance without refocussing over a wavelength range from 0.4 micron to 0.8 micro... | 12/13/1994 |
| 5369661 | Semiconductor laser-pumped solid state laser system and optical coupling system coupling semiconductor laser with optical fiber Light beams output from active layer stripes of a semiconductor laser array are individually collimated in a GRIN lens array and are converged, in a aspheric lens, into a beam spot, to thereby end-pump a solid state laser with high efficiency.... | 11/29/1994 |
| 5369659 | Fault tolerant optical system using diode laser array The individual outputs of a large laser diode array are combined using an optical transformer of diffractive optics. To allow for the tolerances in the laser array and combining optics required for mass production, the system further includes corrector op... | 11/29/1994 |
| 5355387 | Interface module for transverse energy input to dye laser modules An interface module (10) for transverse energy input to dye laser modules is provided particularly for the purpose of delivering enhancing transverse energy beams (36) in the form of illumination bar (54) to the lasing zone (18) of a dye laser device, in ... | 10/11/1994 |
| 5351259 | Semiconductor laser-pumped solid-state laser with plural beam output A semiconductor-laser-pumped solid-state laser apparatus having a semiconductor laser device, a solid state laser medium, and laser resonators. The semiconductor laser device has a plurality of emission points which are arranged on a straight line and fro... | 09/27/1994 |
| 5351264 | Optical apparatus for emitting light and automatic adjustment apparatus therefor An optical apparatus (23) for emitting light is constituted by a fixation holder (8) fixed to a predetermined positioning fixation jig via a fixation plate (8a), a lens-barrel (10), fitted on a cylindrical portion of the fixation holder (8) via an annular... | 09/27/1994 |
| 5349603 | Solid-state laser resonator A solid-state laser resonator includes a pair of reflectors 4, 5, a bar-like laser medium 6, a plurality of point laser sources 1, 2 and resonator including a plurality of resonator portions. At least one of the paired reflectors 4, 5 has a curved-surface... | 09/20/1994 |
| 5349600 | Solid state laser A high-output, single fundamental transverse mode solid state laser is disclosed which uses a semiconductor laser array as an excitation light source. The solid state laser comprises: a laser element which includes a core containing an element added as a ... | 09/20/1994 |
| 5345373 | Lens holding block enabling accurate lens positioning A flat portion has a flat top surface, on which a chip carrier is provided. A light-emitting element is mounted on the chip carrier. A vertical portion is integral with the flat portion and extends vertically, i.e., perpendicularly to the flat top surface... | 09/06/1994 |
| 5335244 | Technique and apparatus using a moveable weak lens An assembly for use in a laser instrument which produces a plane of laser light by reflection from a cone. The assembly includes a weak focusing lens which improves the control over the planarity of the plane of light produced. Because it is weak, the wea... | 08/02/1994 |
| 5329404 | Laser beam expander: 5X A 5× laser beam expander lens that is well-corrected for chromatic aberration can be used without refocussing over a wavelength range from 0.365 micron to 1.3 micron.... | 07/12/1994 |
| 5327451 | Laser diode assembly for laser scanner system A laser source arrangement is provided for use in a laser instrument of a kind used to transmit a scan pattern to a target which is spaced from the laser instrument and to detect light reflected from the target. The laser source arrangement preferably com... | 07/05/1994 |
| 5325378 | Misalignment-tolerant, grating-tuned external-cavity laser with enhanced longitudinal mode selectivity A grating tuned external cavity laser having improved mode selectivity and stability. A cylindrical lens is positioned between a laser amplifier and a prism pair beam expander to focus the laser beam to form a linear spot on a grating. The location of the... | 06/28/1994 |
| 5321718 | Frequency converted laser diode and lens system therefor A compact semiconductor laser light source providing short wavelength (ultraviolet, blue or green) coherent light by means of frequency doubling of red or infrared light from a high power diode heterostructure. The high power diode heterostructure is a MO... | 06/14/1994 |
| 5317589 | Laser oscillator having a curved mirror with a through-hole A laser oscillator includes a housing which seals a laser medium gas from the atmosphere, concave mirrors (or a set of concave and convex mirrors) positioned in the housing and having the laser medium gas therebetween, an apertured mirror positioned betwe... | 05/31/1994 |
| 5315614 | Apparatus and method for soft focusing energy into an optical fiber array A method and apparatus for coupling laser energy into an optical fiber employs a laser with a concave reflector and a planar reflector, a plano-convex focusing lens and an optical fiber array. A divergent laser beam is emitted from the laser and is focuse... | 05/24/1994 |
| 5315613 | Laser diode pumped solid laser A laser diode pumped solid laser comprises a solid laser medium, to which a rare earth metal has been added, a semiconductor laser, which produces a laser beam for pumping the solid laser medium, and a condensing lens, which causes the laser beam to conve... | 05/24/1994 |
| 5309454 | Apparatus for wavelength conversion of laser light An apparatus for wavelength conversion of laser light which can prevent optical destruction of a wavelength conversion element and achieve a high wavelength conversion efficiency. The apparatus for wavelength conversion of laser light has an optical focus... | 05/03/1994 |
| 5307430 | Lensing duct A lensing duct to condense (intensify) light using a combination of front surface lensing and reflective waveguiding. The duct tapers down from a wide input side to a narrow output side, with the input side being lens-shaped and coated with an antireflect... | 04/26/1994 |
| 5305150 | Laser beam expander: 10× A 10× laser beam expander lens that is well-corrected for chromatic aberration can be used without refocussing over a wavelength range from 0.365 micron to 1.3 micron.... | 04/19/1994 |
| 5301201 | Article comprising a tunable semiconductor laser The disclosed tunable (wavelength and/or focal length) laser typically is a surface emitting laser that comprises a multilayer structure that comprises the lower Bragg reflector and the active region. A layer of electro-optic material (typically liquid cr... | 04/05/1994 |
| 5272717 | Single focus backward Raman laser A single focus backward Raman laser that is a compact, efficient apparatus for converting light at a first wavelength provided by a pump laser to light at a Raman-shifted wavelength. The laser is comprised of a gas cell, two lenses, a feedback mirror, an ... | 12/21/1993 |
| 5268920 | System for end-pumping a solid state laser using a large aperture laser diode bar An optical system for end-pumping the gain medium of a three-level or a self-terminating solid state laser with the optical output from a wide aperture laser diode bar is disclosed. In a preferred embodiment, the optical system includes: a laser diode bar... | 12/07/1993 |
| 5263039 | System for generating shaped optical pulses and measuring optical pulses using spectral beam deflection (SBD) A temporally shaped or modified optical output pulse is generated from a bandwidth-encoded optical input pulse in a system in which the input pulse is in the form of a beam which is spectrally spread into components contained within the bandwidth, followe... | 11/16/1993 |
| 5258989 | Solid state laser diode light source A laser diode light source comprises at least two laser diodes (1,2). The beams (3,4) of the diodes (1,2) are combined together by, for example, a polarising beam combiner (11) and the combined beam (18) is focused by a lens (19) onto an optical cable (20... | 11/02/1993 |
| 5257279 | Adjustable focus technique and apparatus using a moveable weak lens An assembly for use in a laser instrument which produces a plane of laser light by reflection from a cone. The assembly includes a weak focusing lens which improves the control over the planarity of the plane of light produced. Because it is weak, the wea... | 10/26/1993 |
| 5251221 | Self aligning intracavity Raman laser Intracavity Raman lasers comprising a pump resonator and a Raman resonator that eliminates alignment problems associated with multi-mirror intracavity lasers. The pump resonators include a laser rod and a pump source. In one embodiment, a first retrorefle... | 10/05/1993 |
| 5251222 | Active multi-stage cavity sensor In accordance with the present invention, an optical sensing device and method are provided for processing with extremely low energy requirements. Spontaneous emissions from an excited optical gain medium generate a propagating waveform. Either a spatial ... | 10/05/1993 |
| 5241557 | Laser focus compensating sensing and imaging device A laser focus compensating sensing and imaging device permits the focus of a single focal point of different frequency laser beams emanating from the same source point. In particular it allows the focusing of laser beam originating from the same laser dev... | 08/31/1993 |
| 5235604 | Optical amplifier using semiconductor laser as multiplexer An optical signal emitted from a first optical is applied to a semiconductor laser through a focusing lens so as to propagate through an active layer of the semiconductor laser. In the semiconductor laser, the optical signal is multiplexed with the laser ... | 08/10/1993 |
| 5228051 | Tilted lens imager in a laser amplifier/oscillator and method utilizing same Lenses (30', 32') are orthogonally tilted with respect to one another in a telescope to provide imaging for an amplifier-phase conjugate mirror (PCM)(10) in a laser oscillator/amplifier (12). This mutually orthogonal tilting avoids the problem of air brea... | 07/13/1993 |
| 5212707 | Array of diffraction limited lasers and method of aligning same A one-dimensional semiconductor laser array assembly typically comprising a one-dimensional semiconductor laser array, a heatsink upon which the laser array is bonded, and a lens assembly. The one-dimensional semiconductor laser array consists of a plural... | 05/18/1993 |
| 5206869 | Method and device for generating high quality laser beam from laser diodes A method and device for generating a collimated laser beam which is circular in cross-section, non-astigmatic, diffraction-limited and has a gaussian energy distribution are disclosed. The device comprises a single mode optical waveguide having an input e... | 04/27/1993 |
| 5206878 | Wide strip diode laser employing a lens An improved diode laser is attained by augmenting the conventional diode laser structure with a cylindrical lens that arrests the divergence of the beam in the spatial direction where it is rapidly diverging. To properly arrest the divergence of the beam ... | 04/27/1993 |
| 5202893 | End pumped solid-state laser An end pumped solid-state laser is comprised of a resonator formed of a pair of mirrors and a laser rod disposed between the pair of mirrors, an exciting light source for generating a pumping light which excites the laser rod and a converging optical elem... | 04/13/1993 |
| 5202898 | Laser oscillator, laser resonator, and apparatus for manufacturing of semiconductor The present invention relates to a laser oscillator, especially to a laser oscillator suitable for ultrafine manufacturing such as an apparatus for manufacturing of a semiconductor wherein the laser oscillator is provided with constant directivity chronic... | 04/13/1993 |
