Laser rods with undoped, flanged end-caps for end-pumped laser applications
US5936984A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094057
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for achieving improved performance in a solid state laser is provided. A flanged, at least partially undoped end-cap is attached to at least one end of a laserable medium. Preferably flanged, undoped end-caps are attached to both ends of the laserable medium. Due to the low scatter requirements for the interface between the end-caps and the laser rod, a non-adhesive method of bonding is utilized such as optical contacting combined with a subsequent heat treatment of the optically contacted composite. The non-bonded end surfaces of the flanged end-caps are coated with laser cavity coatings appropriate for the lasing wavelength of the laser rod. A cooling jacket, sealably coupled to the flanged end-caps, surrounds the entire length of the laserable medium. Radiation from a pump source is focussed by a lens duct and passed through at least one flanged end-cap into the laser rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.