Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10811845 | Surface emitting multiwavelength distributed-feedback concentric ring lasers | Feng Xie, Chung-En Zah | 2020-10-20 |
| 10431957 | Multiwavelength quantum cascade laser via growth of different active and passive cores | Feng Xie, Chung-En Zah | 2019-10-01 |
| 9948063 | Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages | Feng Xie, Chung-En Zah | 2018-04-17 |
| 9917421 | P-type isolation regions adjacent to semiconductor laser facets | Feng Xie, Chung-En Zah | 2018-03-13 |
| 9865990 | Monolithic wide wavelength tunable mid-IR laser sources | Lawrence Charles Hughes, Jr., Feng Xie, Chung-En Zah | 2018-01-09 |
| 9685766 | Multiwavelength quantum cascade laser via growth of different active and passive cores | Feng Xie, Chung-En Zah | 2017-06-20 |
| 9601901 | Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devices | Feng Xie, Chung-En Zah | 2017-03-21 |
| 9548590 | Quantum cascade laser design with stepped well active region | Feng Xie, Chung-En Zah | 2017-01-17 |
| 9547124 | Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages | Feng Xie, Chung-En Zah | 2017-01-17 |
| 9455551 | Mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages | Feng Xie, Chung-En Zah | 2016-09-27 |
| 9385509 | Monolithic wide wavelength tunable mid-IR laser sources | Lawrence Charles Hughes, Jr., Feng Xie, Chung-En Zah | 2016-07-05 |
| 9231368 | Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devices | Feng Xie, Chung-En Zah | 2016-01-05 |
| 8514902 | P-type isolation between QCL regions | Feng Xie, Chung-En Zah | 2013-08-20 |
| 7072376 | Method of manufacturing an InP based vertical cavity surface emitting laser and device produced therefrom | Benjamin L. Hall, Nobuhiko Nishiyama, Chung-En Zah | 2006-07-04 |
| 5802232 | Bonded structure with portions of differing crystallographic orientations, particularly useful as a non linear optical waveguide | Rajaram Bhat, Mark A. Koza, Sung-Joo Ben Yoo | 1998-09-01 |
| 5796902 | Coherent blue/green optical source and other structures utilizing non-linear optical waveguide with quasi-phase-matching grating | Rajaram Bhat, Mark A. Koza, Sung-Joo Ben Yoo | 1998-08-18 |
| 5732179 | Birefringence-free semiconductor waveguide | Ghie-Hugh Song, Julian Bernard Donald Soole | 1998-03-24 |
| 5102812 | Method of making a lateral bipolar heterojunction structure | John Hayes, Hoi-Jun Yoo | 1992-04-07 |