Ultrashort pulse amplification in cryogenically cooled amplifiers
US6804287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2325
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser amplifier system amplifies pulses in a single “stage” from ˜10−9 joules to more than 10−3 joules, with average power of 1-10 watts, and beam quality M2<2. The laser medium is cooled substantially below room temperature, as a means to improve the optical and thermal characteristics of the medium. This is done with the medium inside a sealed, evacuated or purged cell to avoid moisture or other materials condensing on the surface. A “seed” pulse from a separate laser is passed through the laser medium, one or more times, in any of a variety of configurations including single-pass, multiple-pass, and regenerative amplifier configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.