Robert Allen Bryan

US Patent:

55005403, Mar 19, 1996

Filed:

Apr 15, 1994

Appl. No.:

8/228202

Inventors:

Jack L. Jewell - Boulder CO
William E. Quinn - Boulder CO
Stan E. Swirhun - Boulder CO
Robert P. Bryan - Boulder CO

Assignee:

Photonics Research Incorporated - Broomfield CO

International Classification:

H01L 3300
H01L 2503

US Classification:

257 82

Abstract:

A package and method for packaging optoelectronic or electronic components is provided in which multiple chip regions are packaged simultaneously prior to sectioning of the wafer into chips. The method and package allows micro-optic and other package elements to be integrated onto wafers on the same face as the optoelectronic or electronic devices without inhibiting the ability to make electrical contact to the devices. The package elements may be integrated to the wafer by material deposition, by spinning, or by physical mounting.

US Patent:

54286344, Jun 27, 1995

Filed:

Nov 5, 1992

Appl. No.:

7/972820

Inventors:

Robert P. Bryan - Boulder CO
Gregory R. Olbright - Boulder CO
James A. Lott - Albuquerque NM
Richard P. Schneider - Albuquerque NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01S 319

US Classification:

372 45

Abstract:

A vertical cavity surface emitting laser that emits visible radiation is built upon a substrate, then having mirrors, the first mirror on top of the substrate; both sets of mirrors being a distributed Bragg reflector of either dielectrics or other materials which affect the resistivity or of semiconductors, such that the structure within the mirror comprises a plurality of sets, each having a thickness of. lambda. /2n where n is the index of refraction of each of the sets; each of the mirrors adjacent to spacers which are on either side of an optically active bulk or quantum well layer; and the spacers and the optically active layer are from one of the following material systems: In. sub. z (Al. sub. y Ga. sub. 1-y). sub. 1-z P, InAlGaAs, AlGaAs, InGaAs, or AlGaP/GaP, wherein the optically active region having a length equal to m. lambda. /2n. sub. eff where m is an integer and n. sub.

US Patent:

53897978, Feb 14, 1995

Filed:

Feb 24, 1993

Appl. No.:

7/943823

Inventors:

Robert P. Bryan - Boulder CO
Gregory R. Olbright - Boulder CO
Thomas M. Brennan - Albuquerque NM
Jeffrey Y. Tsao - Albuquerque NM

Assignee:

The United States of America as represented by the Secretary of the
Department of Energy - Washington DC

International Classification:

H01L 3104
H01L 29205

US Classification:

257 21

Abstract:

A photodetector that is responsive to a wavelength or wavelengths of interest which have heretofore been unrealized. The photodetector includes a resonant cavity structure bounded by first and second reflectors, the resonant cavity structure being resonant at the wavelength or wavelengths of interest for containing a plurality of standing waves therein. The photodetector further includes a radiation absorbing region disposed within the resonant cavity structure, the radiation absorbing region including a plurality of radiation absorbing layers spaced apart from one another by a distance substantially equal to a distance between antinodes of adjacent ones of the standing waves. Each of radiation absorbing layers is spatially positioned at a location of one of the antinodes of one of the standing waves such that radiation absorption is enhanced. The radiation absorbing layers may be either bulk layers or quantum wells includes a plurality of layers, each of which is comprised of a strained layer of InGaAs. Individual ones of the InGaAs layers are spaced apart from one another by a GaAs barrier layer.

US Patent:

55261825, Jun 11, 1996

Filed:

Feb 17, 1993

Appl. No.:

8/018943

Inventors:

Jack L. Jewell - Boulder CO
Boris J. Muchnik - Denver CO
Robert P. Bryan - Boulder CO

Assignee:

Vixel Corporation - Broomfield CO

International Classification:

G02B 2710

US Classification:

359621

Abstract:

An optical memory system employing multiple reading/writing optical beams for simultaneously reading from or writing to multiple tracks of optical media to allow reading/writing of closely spaced adjacent tracks. Various optical elements and other means are incorporated to enable the beams as a group to remain focused and properly tracking as the beams as a group scan across the tracks. Means are also provided for modulating the beams to reduce crosstalk. Various optical elements and combinations of optical elements are provided to compensate for beam and system imperfections.

US Patent:

59769050, Nov 2, 1999

Filed:

Feb 16, 1996

Appl. No.:

8/602609

Inventors:

Timothy M. Cockerill - Superior CO
Robert P. Bryan - Albuquerque NM

Assignee:

Cielo Communications, Inc. - Broomfield CO

International Classification:

H01L 2906
H01L 3922
H01L 2940

US Classification:

438 36

Abstract:

An array of infrared vertical cavity surface-emitting lasers (VCSELs) and method of manufacturing the same is disclosed which reduces device-to-device non-uniformity for VCSEL arrays manufactured using well-known vapor phase epitaxial processes. The method involves growing layers comprising a standard infrared VCSEL array using a vapor phase epitaxial process on a substrate which is mosoriented from the (100) plane in the {111}A direction by preferably between eight and twelve degrees or more.

US Patent:

55258107, Jun 11, 1996

Filed:

May 9, 1994

Appl. No.:

8/239827

Inventors:

Jack L. Jewell - Boulder CO
Robert P. Bryan - Boulder CO
Winston S. Fu - Boulder CO
Stan E. Swirhun - Boulder CO
William E. Quinn - Boulder CO

Assignee:

Vixel Corporation - Broomfield CO

International Classification:

G06K 714
G06K 922

US Classification:

250566

Abstract:

A solid-state scanner for reading bar codes or projecting images is described. The scanner operates either in a reading mode or a calibrate mode using the same hardware. Use of two-dimensional array light sources minimizes the size of the semiconductor chips containing the light source arrays is provided. Use of oversampling or anamorphic optical systems increase tolerances to angular misorientations is also discussed. Used in conjunction with a mechanical scanning device, the scanner is capable of reading two-dimensional bar codes or generating two-dimensional images.