Unstable laser resonator for generating a stable fundamental mode beam profile
US5406578A · kind A · utility
6Cited by
12References
19Claims
0Family size
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Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The reflecting surfaces within the resonator are minimized in an unstable laser resonator having a radially-dependent output end reflection profile and a passive Q-switch so that the least possible competing resonator geometries can be formed. For this purpose, a saturable absorber foil can be provided as a passive Q-switch element mounted so as to be inclined with respect to the optical axis. Furthermore, it is advantageous to use an output reflector having highly precise parallel boundary surfaces and to align this output reflector with high precision parallel to the end surfaces which delimit the laser medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.