Method, system and apparatus for hybrid optical and electrical pumping of semiconductor lasers and LEDs for improved reliability at high temperatures
US9728936B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2013 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method, system and an apparatus for hybrid optical and electrical pumping of semiconductor lasers and light-emitting diodes (LEDs) improves reliability at high operating temperatures. The semiconductor laser or LED is biased via optical pumping and a relatively small electrical modulation current modulates the laser. At low modulation speeds, the modulation current is substantially lower than that required for biasing the laser or directly modulating it at high speeds. The lifetime of the laser is improved by substantially reducing the operating current, enabling laser lifetimes adequate for operation in many applications, such as deep-hole oil drilling and jet engine control, where operation is not currently possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.