Telescopic thermal lens compensating laser
US5001718A · kind A · utility
41Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2316
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In order to compensate for the thermally induced lens in the active element of an optical stage of a laser, the optical stage is provided with a telescope. The telescope comprises first and second lens arrangements. The first lens arrangement is located so that thermally induced lens is located at one of its focal planes. The position of the second lens arrangement is adjusted so as to compensate for variations in the power of flashlamps which pump the active element. In one embodiment, the laser has an oscillator stage and an amplifier stage. The telescope is placed after the oscillator stage and comprises two convex lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.