Frequency doubling a laser beam by using intracavity type II phase matching
US4618957A · kind A · utility
27Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0815
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A frequency doubler for a laser is disclosed in which a Type II SHG crystal is oriented to generate a second harmonic frequency beam in response to the orthogonal components of a fundamental beam. After the fundamental beam makes a round trip through the SHG crystal, any differential phase delays between the orthogonal components due to birefringence are eliminated to improve the efficiency of the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.