Efficient extended shift monolithic raman fiber laser
US8976446B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2013 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Aug 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/08059
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for producing Stimulated Raman Scattering (SRS) is disclosed. A single optical fiber or Raman oscillator is optically pumped by a pump laser of sufficient power to generate SRS to generate several Stokes shifts of energy. This generates a multi-wavelength output or a single wavelength with several stokes energy shifts from the pump wavelength. A selective, monolithic-coated Raman fiber oscillator laser is utilized to increase the efficiency of frequency shifting by providing frequency-specific feedback at both facets of a free space coupled optical fiber oscillator. Frequencies that lie several bands away from the primary pump frequency may be efficiently achieved in a fiber oscillator by re-circulating the required stokes-shifted frequencies via selective high-reflection coatings. By re-circulating the intra-band stokes frequencies, the required intensities in each respective frequency will be increased, thereby dropping the respective Raman threshold in the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.