Issued Patents All Time
Showing 26–50 of 130 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703897 | Semiconductor laser with integral spatial mode filter | David F. Welch, David G. Mehuys | 1997-12-30 |
| 5696779 | Wavelength tunable semiconductor laser with mode locked operation | David F. Welch, David G. Mehuys | 1997-12-09 |
| 5689123 | III-V aresenide-nitride semiconductor materials and devices | Jo S. Major, David F. Welch | 1997-11-18 |
| 5677920 | Upconversion fiber laser | Robert G. Waarts, David F. Welch, Steven Sanders | 1997-10-14 |
| 5657153 | Optical amplifier with complementary modulation signal inputs | John G. Endriz, David F. Welch, Robert G. Waarts, Steven Sanders | 1997-08-12 |
| 5651018 | Wavelength-stabilized, high power semiconductor laser | David G. Mehuys, David F. Welch, Robert J. Lang | 1997-07-22 |
| 5602864 | Semiconductor laser with integral spatial mode filter | David F. Welch, David G. Mehuys | 1997-02-11 |
| 5592503 | Semiconductor laser with integral spatial mode filter | David F. Welch, David G. Mehuys | 1997-01-07 |
| 5566196 | Multiple core fiber laser and optical amplifier | — | 1996-10-15 |
| 5544184 | Semiconductor illumination system with expansion matched components | Edmund L. Wolak, John G. Endriz, D. Philip Worland, David D. Dawson | 1996-08-06 |
| 5539571 | Differentially pumped optical amplifer and mopa device | David F. Welch, Robert G. Waarts, David G. Mehuys, Amos A. Hardy, Ross A. Parke | 1996-07-23 |
| 5537432 | Wavelength-stabilized, high power semiconductor laser | David G. Mehuys, David F. Welch, Robert J. Lang | 1996-07-16 |
| 5530709 | Double-clad upconversion fiber laser | Robert G. Waarts, David F. Welch, Steven Sanders | 1996-06-25 |
| 5520244 | Micropost waste heat removal system | David C. Mundinger | 1996-05-28 |
| RE35215 | Frequency converted laser diode and lens system therefor | Robert G. Waarts, David F. Welch, Robert J. Lang, Derek W. Nam | 1996-04-23 |
| 5499261 | Light emitting optical device with on-chip external cavity reflector | David F. Welch, David G. Mehuys | 1996-03-12 |
| 5453641 | Waste heat removal system | David C. Mundinger | 1995-09-26 |
| 5392308 | Semiconductor laser with integral spatial mode filter | David F. Welch, David G. Mehuys | 1995-02-21 |
| 5337328 | Semiconductor laser with broad-area intra-cavity angled grating | Robert J. Lang, Kenneth M. Dzurko, David F. Welch | 1994-08-09 |
| 5321718 | Frequency converted laser diode and lens system therefor | Robert G. Waarts, David F. Welch, Robert J. Lang, Derek W. Nam | 1994-06-14 |
| 5282080 | Surface coupled optical amplifier | David F. Welch | 1994-01-25 |
| 5255332 | NxN Optical crossbar switch matrix | David F. Welch, Robert G. Waarts, Amos A. Hardy, David G. Mehuys, Stephen O'Brien | 1993-10-19 |
| 5252513 | Method for forming a laser and light detector on a semiconductor substrate | Thomas L. Paoli, G. A. Neville Connell, Robert L. Thornton | 1993-10-12 |
| 5231642 | Semiconductor ring and folded cavity lasers | Kenneth M. Dzurko, Robert G. Waarts, David F. Welch, Amos A. Hardy, Stephen O'Brien | 1993-07-27 |
| 5219785 | Method of forming current barriers in semiconductor lasers | David F. Welch, William Streifer | 1993-06-15 |