Electrically pumped photonic-crystal surface-emitting lasers with optical detector
US11139636B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Nov 27, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Dec 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34333
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrically pumped photonic-crystal surface-emitting lasers with optical detector comprises plurality of air holes, by the variation of position and size proportion form a photonic crystal having main structure and sub structure, and produces an optical detection signal by light guiding proportion of the light guiding tunnel, further have power proportion of the laser by reading the strength of the optical detection signal, so the automatic power control circuit can feedback the power proportion for controlling the surface-emitting laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.