Integrated inter-cavity photodetector for laser power and threshold estimation
US11075503B2 · kind B2 · utility
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12References
20Claims
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Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Jul 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-section laser device is configured with a gain section and an integrated photodetector section. The photodetector section, rather than being a separate component, is integrated directly into the body of the laser. The integrated photodetector section absorbs photons generated by the gain section and creates a photocurrent that is proportional to the output of the multi-section laser device. The measured photocurrent is usable to calculate power output of the multi-section laser device and to identify any adjustments that may be needed to be made to the laser in order to achieve desired laser light output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.