Method of making laser beam optical decoupling element for an astable laser resonator
US4327129A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Jan 7, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/08063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present optical element for an astable laser resonator includes a subate of a material which is transparent to the respective laser radiation. In manufacturing the present optical element the substrate is ground and polished on both surfaces and a template or mask is secured to one surface of the substrate. The mask has a mathematically computed boundary configuration which provides a diffraction limited divergence for the finished optical element. In the areas not covered by the mask a highly reflective coating is applied, for example, by vapor deposition. The substrate area which is not covered by the highly reflective coating remains transparent to the laser radiation. Thus, the element is useful as the reflector and/or as a lens in an astable laser resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.