Solid state system for frequency conversion using raman-active media and non-linear media
US5673281A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Apr 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/115
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A solid state system for converting the frequency of light emitted in the form of a laser beam using Stimulated Raman Scattering (SRS) and non-linear conversion. A solid Raman-active medium disposed inside the laser resonator shifts the frequency of the laser beam by a characteristic frequency of the medium to generate a Raman beam in accordance with the SRS effect. Another solid non-linear medium is disposed in the laser resonator for shifting the frequency of the Raman beam to generate an output beam at the desired frequency. The solid non-linear medium is a Second Harmonic Generator (SHG), a Sum Frequency Generator (SFG) or a Difference Frequency Generator (DFG) and can also generate an output beam corresponding to the sum output of the laser beam and the Raman beam. The solid Raman-active medium and the solid-non linear medium can be positioned inside a separate secondary resonator to achieve high conversion efficiency. The system is compatible with Q-switching and frequency tuning for ensuring suitable output beam parameters, and is well-suited for guide star applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.