Systems and methods for chip-scale lasers with low spatial coherence and directional emission
US11616341B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 24, 2020 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Exemplary embodiments of the present disclosure include chip-scale laser sources, such as semiconductor laser sources, that produce directional beams with low spatial coherence. The lasing modes are based on the axial orbit in a stable cavity and have good directionality. To reduce the spatial coherence of emission, the number of transverse lasing modes can be increased by fine-tuning the cavity geometry. Decoherence is reached in as little as several nanoseconds. Such rapid decoherence facilitates applications in ultrafast speckle-free full-field imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.