Slab geometry laser material with concave edges
US4918703A · kind A · utility
12Cited by
12References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Apr 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0615
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A substantially rectangular slab of laser material has a pair of opposing concave edge faces to reduce parasitic oscillations. The concavities can be curved in either the transverse or longitudinal directions or both, i.e., they are toroidal sections. The slab can be Nd:YAG. Brewster ends and chamfered corners can be provided for the slab as well as tapered portions for the concavities. In a laser, the concave portions have a length slightly greater than that of the pump lamps. A pair of siderails are over the concave portions to reduce optical distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.