| Patent Number |
Title Of Patent |
Date Issued |
| RE33722 |
Optical system with bright light output |
October 22, 1991 |
| An optical system producing bright light output for optical pumping, communications, illumination and the like in which one or more fiberoptic waveguides receive light from one or more diode lasers or diode laser bars and transmit the light to an output end where it is focused or collima |
| 5231642 |
Semiconductor ring and folded cavity lasers |
July 27, 1993 |
| A semiconductor laser that includes at least one grating reflector with a grating period selected to diffract at a nonperpendicular angle within the plane of the laser waveguide. This allows dispersal of laser light, eliminating filamentary multimode operation of broad area lasers. In on |
| 5219785 |
Method of forming current barriers in semiconductor lasers |
June 15, 1993 |
| A method using implantation to form a semiconductor laser or laser array with current blocking implants. A semiconductor material laser structure including layers of a first conductivity type, an active region and layers of a second conductivity type is formed. In a first embodiment, imp |
| 5193098 |
Method of forming current barriers in semiconductor lasers |
March 9, 1993 |
| A method using implantation to form a semiconductor laser or laser array with current blocking implants. A semiconductor material laser structure including layers of a first conductivity type, an active region and layers of a second conductivity type is formed. In a first embodiment, imp |
| 5185754 |
Spectrally stable laser diode with internal reflector |
February 9, 1993 |
| A laser diode construction having internal reflectors within the laser cavity to provide a stable spectral mode of laser operation. The laser includes a plurality of contiguous semiconductor layers disposed on a substrate to form a semiconductor body with at least one layer forming an |
| 5185752 |
Coupling arrangements for frequency-doubled diode lasers |
February 9, 1993 |
| Arrangements for efficiently coupling light between a laser diode and a second-harmonic generator which feature external resonant cavities that include a feedback grating fabricated on the second-harmonic generator. The feedback grating reflects light of a first frequency that matches th |
| 5168401 |
Brightness conserving optical system for modifying beam symmetry |
December 1, 1992 |
| An optical system for use in conjunction with a one or two dimensional array of high brightness sources where such sources are individually rotated by multiple reflective elements and in turn may be captured by beam filling optics and subsequently re-imaged by symmetric and asymmetric |
| 5159604 |
Antiguided semiconductor laser array with edge reflectors |
October 27, 1992 |
| In a semiconductor laser array structure in which antiguided regions between high effective refractive index waveguide regions experience greater gain then the waveguide regions, structures introduced at the sides of the array, next to the edgemost waveguides and not on the array per |
| 5103456 |
Broad beam laser diode with integrated amplifier |
April 7, 1992 |
| An integrated master oscillator/power amplifier semiconduction device having a laser diode oscillator, a broad area light amplifier and a coupling grating disposed to deflect light at an angle from the laser oscillator to the light amplifier. The amplifier may terminate as an output |
| 5099488 |
Ribbed submounts for two dimensional stacked laser array |
March 24, 1992 |
| A laser array submount structure for assembly into a two-dimensional stacked array with precise separation between laser diodes of adjacent submounts. The submount includes a deformable metal layer, such as a soft solder, on one major surface of a laser array support plate. A spacer |
| 5088105 |
Optical amplifier with folded light path and laser-amplifier combination |
February 11, 1992 |
| An optical amplifier having one or more amplifier regions with a noncollinear light path provided by curved or folded waveguides therein between input, output and reflective surfaces provided, for example, by a low reflectivity front facet and a high reflectivity rear facet. The ampl |
| 5065401 |
Pulse jitter reduction method for a laser diode or array |
November 12, 1991 |
| A method of driving a multimode laser diode has pulse circuitry providing a sequence of drive current pulses to the laser and modulation circuitry superimposing a modulation current upon the drive current pulses. When the modulation amplitude and rate are sufficiently great, rapid switch |
| 5048036 |
Heterostructure laser with lattice mismatch |
September 10, 1991 |
| Semiconductor heterostructure lasers having at least one lattice mismatched strain layer in the cladding proximate to the active region. Indium or phosphorus may be added in high concentration to form the strain layers. The strain layers may be spaced somewhat apart from the active regio |
| 5033054 |
Phase conjugate laser |
July 16, 1991 |
| A laser having a phase conjugating reflector positioned with a resonant cavity of a laser configuration capable of multimode operation. The resonant cavity or other means associated with the laser configuration selects the preferred mode at threshold. The phase conjugating material b |
| 5003550 |
Integrated laser-amplifier with steerable beam |
March 26, 1991 |
| A monolithic integrated master oscillator power amplifier (MOPA) device including a single mode diode laser with distributed Bragg reflectors, an amplifier in tandem with the laser, lateral phase controllers and a detuned second order grating surface output coupler, all on a common s |
| 4995050 |
Diode laser with external lens cavity |
February 19, 1991 |
| A diode laser external lens cavity configuration having a stripe mirror with two thin parallel stripes placed in front of the two lobes of the arrays for far field output pattern. The configuration includes a diode laser array or broad area laser, a lens system, such as a graded-index |
| 4984242 |
GaAs/AlGaAs heterostructure laser containing indium |
January 8, 1991 |
| GaAs/AlGaAs heterostructure lasers containing indium in at least one layer other than or in addition to the active region. Embodiments are described in which indium added in low concentration to the cladding functions to match the lattice constants between the cladding and active layers, |
| 4972427 |
Talbot cavity diode laser with uniform single-mode output |
November 20, 1990 |
| A diode laser of the type having an array of laser emitters in a Talbot cavity in which edge reflectors are added to enhance feedback to edgemost emitters. In one embodiment, a transparent slab with reflectively coated sides is present between the phase plane of the emitted light and the |
| 4934273 |
Laser flare |
June 19, 1990 |
| A compact laser flare illuminator includes a semiconductor diode laser array radiation source, an energy source for the radiation source that can be switched on and a housing which holds the array and energy source, while allowing egress of a beam. This illuminator may be used to fac |
| 4933301 |
Method of forming a semiconductor laser |
June 12, 1990 |
| A method of making semiconductor laser arrays having an impurity disordered pattern of waveguides at least some of which are directly joined at branching junctions. The region near the branching junctions provides a phase boundary condition in which lightwaves propagating in adjacent |
| 4862802 |
Method of initiating a sequence of pyrotechnic events |
September 5, 1989 |
| A pyrotechnic ignition method in which a semiconductor laser bar or bars containing a number of independent laser array sources deliver optical power in a specified sequence through optical fibers to a set of pyrotechnic elements in order to initiate a sequence of pyrotechnic events, |
| 4845725 |
Window laser with high power reduced divergence output |
July 4, 1989 |
| A window laser having at least one window region with a transparent waveguide layer optically coupled to an active region generating lightwaves. The waveguide layer is characterized by a broader guided transverse mode for the lightwaves than the active region and may have a thickness |
| 4826269 |
Diode laser arrangement forming bright image |
May 2, 1989 |
| A plurality of diode lasers is focussed onto a single region by arranging the diodes at equally spaced locations on a first arc. Each diode laser emits light in a slit-like pattern which is characterized by orthogonal axes. In a first group of cylindrical lenses, one associated with each |
| 4820010 |
Bright output optical system with tapered bundle |
April 11, 1989 |
| An optical system producing bright light output for optical pumping, communications, illumination and the like in which one or more fiberoptic waveguides receive light from one or more diode lasers or diode laser bars and transmit the light to an output end where it is focused or collima |
| 4818062 |
Optical system with bright light output |
April 4, 1989 |
| An optical system producing bright light output for optical pumping, communications, illumination and the like in which one or more fiberoptic waveguides receive light from one or more diode lasers or diode laser bars and transmit the light to an output end where it is focused or collima |
| 4815084 |
Semiconductor laser with integrated optical elements |
March 21, 1989 |
| Lasers and laser arrays having various optical elements, such as lenses, apertures, prisms, etalons and phase plates, integrated within the resonant optical cavity of the laser. The optical elements are created by introducing a lateral geometric contour in boundaries of refractive index |
| 4809288 |
Hybrid Y-junction laser array |
February 28, 1989 |
| A semiconductor laser array having a plurality of waveguides at least some of which are directly joined at Y-junctions. The region near the Y-junctions provides a phase boundary condition in which lightwaves propagating in adjacent waveguides are in phase. A combination of strong and |
| 4803691 |
Lateral superradiance suppressing diode laser bar |
February 7, 1989 |
| A diode laser bar producing a linear array of laser beams without lateral superradiance. The laser bar has a double-heterostructure or quantum well structure. Etched channels in the substrate create lateral corrugations in the subsequently deposited layers including the active region. Th |
| 4794615 |
End and side pumped laser |
December 27, 1988 |
| A laser having a combination of end and side pumping so as to produce high power pulsed output with little or no delay between side pump pulses and laser output pulses, with suppressed spiking due to gain switching, and with high modulation rates. An active medium, such as a solid state |
| 4763975 |
Optical system with bright light output |
August 16, 1988 |
| An optical system producing bright light output for optical pumping, communications, illumination and the like in which one or more fiberoptic waveguides receive light from one or more diode lasers or diode laser bars and transmit the light to an output end where it is focused or collima |
| 4751711 |
Asymmetric offset stripe laser for emission in a single lobe |
June 14, 1988 |
| A phased array laser having a laterally asymmetric variation in the gain or coupling of lasing elements of the array for emission in a single far field lobe. The lasing elements are confined by internal waveguide structuring, periodically spaced current confinement stripes, or by a h |
| 4719634 |
Semiconductor laser array with fault tolerant coupling |
January 12, 1988 |
| A semiconductor laser array having a plurality of sets of interconnecting waveguides, each joining two optical waveguides together at respective branching junctions. The array has a plurality of semiconductor layers disposed on a substrate, at least one of the layers forming an active |
| 4718069 |
Semiconductor laser array with single lobed output |
January 5, 1988 |
| A semiconductor laser array having a single lobe far field intensity pattern radiating normal to the laser's light emitting facet. The laser array has a plurality of semiconductor layers disposed over a substrate, at least one of the layers forming an active region for lightwave gene |
| 4716568 |
Stacked diode laser array assembly |
December 29, 1987 |
| A diode laser array assembly made from a plurality of linear diode laser array subassemblies stacked one above the other. Each subassembly is an array of individual laser beam emitters, such as a laser bar, mounted on a support plate. An electrically conductive path goes from one major s |
| 4688884 |
Fiberoptic coupling system for phased-array semiconductor lasers |
August 25, 1987 |
| A fiberoptic coupling system comprising a phased array semiconductor laser and a squashed multimode light transmitting fiber. The squashed input end has an oblong, preferably elliptical, or polygonal cross-section with major and minor core widths. The major width decreases toward an outp |
| 4633476 |
Semiconductor laser with internal reflectors and vertical output |
December 30, 1986 |
| A heterostructure semiconductor laser emitting light in a direction vertical to the horizontal active layer has one or more internal reflectors for feedback. Angled reflectors, in the form of grooves etched at an angle exceeding the angle of total internal reflection through the laye |
