Grating-outcoupled surface-emitting lasers
US6963597B2 · kind B2 · utility
2Cited by
25References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Laser diodes are formed with an outcoupling grating between two separate distributed Bragg reflectors. The devices have gain regions located between the reflector gratings for pumping the active region. The outcoupling grating couples light out of the waveguide normal to the surface if the grating spacings are equal to an integer number of wavelengths of the light within the cavity. If the gratings are not such an integer number, the light is coupled out of the cavity off the normal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.