Frequency filtered solid-state laser
US5263038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Feb 3, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/08072
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method is provided for controlling the output frequency of a laser having a lasant gain medium which is characterized by at least two gain curve distributions over a range of lasant frequencies and having a laser cavity which is characterized by at least one resonant frequency within one gain curve distribution. The method comprises the steps of: locating in the laser cavity a first Lyot filter which has a transmission band which favors the frequency range of one gain curve distribution in preference to the frequency range of the other gain curves; and locating in the cavity a second Lyot filter which has a transmission band which favors said one resonant frequency within the frequency range of the one gain curve, whereby an essentially single frequency output is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.