Tunable single-frequency ring laser
US5148444A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1988 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Aug 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable, single-frequency, solid-state ring laser includes a solid-state laser material pumped by laser-diode light and at least one additional external piece which reflects the intra-cavity lasing light in a closed loop such that the plane of polarization is changed in an appropriate amount to compensate for magneto-optic change (Faraday rotation) of the plane of polarization, which occurs either inside the solid-state material or in one of the external pieces which traversed by the intra-cavity lasing beam. At least one of the external elements has the ability to change the optical path length of the intra-cavity lasing beam in order to tune the laser frequency by means of mechanical movement, electro-optic properties, magneto-optic properties, or some combination of the above properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.