Output coupler for external cavity laser
US7639718B1 · kind B1 · utility
9Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Nov 26, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/109
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosed invention is an external cavity laser with a volume holographic VHG output coupler. The facet of the VHG is coated with a very high reflectivity coating (HR close to 100%) for the purpose of reflecting the second harmonic (SH) light generated intra-cavity. The HR coating for the SH light has also an anti-reflection (AR) coating at the fundamental wavelength. The reflected second harmonic (SH) light is either reflected directly out of the cavity by the VHG or back to the cavity towards the optics that deflect the SH light out of the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.