Solid-state laser with trapped pump light
US5774488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1994 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Jun 30, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2316
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A solid-state laser in which a rod (10) of lasing material is held within an optical cavity formed within a cooling block (40) having a highly surface facing the rod. A longitudinal slit (44) formed in the block from the optical cavity to the outside allows the pumping light from an emission line (36) of semiconductor stripe lasers (30) fabricated on a laser bar (28) to irradiate the laser rod and multiply reflect within the optical cavity. Thereby, pump light is efficiently absorbed by the laser rod, and the laser rod is thermally controlled. Alternatively, cooling liquid (124) can flow axially along the laser rod and within an axially extending optical cavity formed by a reflective coating (125) deposited on a tube (122) enclosing the cooling liquid and having a slit (126) through which pump light is irradiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.