Method of producing a small beam expansion of laser light
US5287379A · kind A · utility
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1Claims
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Key dates
| Filing date | Oct 2, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Oct 2, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of producing a small expansion of laser light, in a pulse laser apparatus, including producing a small preliminary laser light by pumping a laser medium, and then, after an appropriate time lag, then pumping the preliminary laser medium at a higher intensity than the first pumping, thereby producing a laser light which is smaller in beam expansion than in the case where a preliminary pumping is not performed. The laser light which is smaller in beam expansion is due to the population inversion occurring in a small beam expansion part of pulse laser light obtained by the preliminary pumping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.