Michael M Ung

US Patent:

54694566, Nov 21, 1995

Filed:

Mar 31, 1994

Appl. No.:

8/220441

Inventors:

Lesley Rogers - Los Angeles CA
Michael M. Ung - Ontario CA

Assignee:

Opto Power Corporation - City Of Industry CA

International Classification:

H01S 318
G02B 630
G02B 642

US Classification:

372 43

Abstract:

A laser device includes a glass optical fiber secured in position to capture light output from the laser. The fiber is secured in position with solder directly to the glass of the fiber without any metallization of the fiber. The solder-only technique satisfies the critical requirement for preventing fiber movement over the lifetime standard for laser device with multimade lasers and multimode fibers.

US Patent:

57152640, Feb 3, 1998

Filed:

Sep 12, 1996

Appl. No.:

8/713261

Inventors:

Rushikesh Patel - Tucson AZ
Robert Morris - Tucson AZ
Michael Ung - Tucson AZ

Assignee:

Opto Power Corporation - Tucson AZ

International Classification:

H01S 304
H01S 3091

US Classification:

372 36

Abstract:

An assembly of simple, like laser diode submounts or laser diode bars lend themselves to volume manufacturing techniques. Individual diodes, or diode bars are supported on electrically-insulating submounts which have electrically-isolated metallizations applied thereto for mounting on a single insulating plate and to one another in a stack and for mounting to a common heat sink.

US Patent:

55375022, Jul 16, 1996

Filed:

Feb 10, 1995

Appl. No.:

8/386412

Inventors:

Rushikesh M. Patel - Pomona CA
Lesley Rogers - Los Angeles CA
Michael M. Ung - Ontario CA

Assignee:

Opto Power Corporation - Tucson AZ

International Classification:

G02B 636

US Classification:

385 92

Abstract:

A laser package includes a housing and a subassembly to which the critical components of the laser package are mounted. The subassembly is structured to preserve component alignment even in the presence of thermal excursions by ensuring that any movement which might occur effects all the components in a way to preserve alignment. The subassembly is easily removable from the housing and thus permits replacement if a failure should occur. A reverse laser diode is included to provide a path for reverse currents which otherwise would be damaging to the active laser diode.

US Patent:

54385806, Aug 1, 1995

Filed:

Sep 24, 1993

Appl. No.:

8/126259

Inventors:

Rushikesh M. Patel - Pomona CA
Michael M. Ung - Ontario CA

Assignee:

Opto Power Corporation - City of Industry CA

International Classification:

H01S 304

US Classification:

372 36

Abstract:

A laser package is designed for large scale assembly by machinig a piec3 part of relatively large dimensions where the part has a slot for holding a laser. The piece part is mounted on heatsink of like dimensions. A second piece part includes an elongated groove for holding a fiber lens plate where the second piece part is mounted against the edge of the heat sink such that the lens is properly aligned with the laser. Thus, the critical alignment of the laser and the fiber is achieved by the alignment of like dimensioned piece parts of relatively large dimensions.

US Patent:

60288787, Feb 22, 2000

Filed:

Dec 15, 1997

Appl. No.:

8/990347

Inventors:

Rajiv Agarwal - Calcutta, IN
Michael Ung - Tucson AZ

Assignee:

Opto Power Corporation - Tucson AZ

International Classification:

H01S 319

US Classification:

372 50

Abstract:

Protection from current and voltage spikes is provided for a laser array by attaching a reverse diode laser array to shared contact pads before the first laser array is bonded to those pads. The arrangement provides for surge protection even during fabrication of the laser package where device failure results from power surges before surge protection circuitry is in place. Surge protection is afforded by having a reverse diode of the reverse diode array electrically in parallel with a corresponding laser diode of the protected array when activated.

US Patent:

57455147, Apr 28, 1998

Filed:

Apr 26, 1996

Appl. No.:

8/638545

Inventors:

Rushikesh Patel - Tucson AZ
Michael Ung - Tucson AZ

Assignee:

Opto Power Corporation - Tucson AZ

International Classification:

H01S 318

US Classification:

372 43

Abstract:

A laser diode structure includes a metallic gasket which is sandwiched between the laser diode submount and the backside electrode in the absence of solder interfaces. The gasket has mirror image, shallow recesses in the surfaces thereof with each surface having the general shape of a wing. The recesses are formed into sealed coolant conduits when the several layers are bonded together into an integrated structure. The narrow end of each recess communicates with an aperture through the adjacent layer to provide inlet and outlet ports for the coolant. The gasket has an aperture therethrough at the wide ends of the recesses for the coolant to circulate. The gasket can be formed from a single layer or from two layers each with a single recess.