High-power forward Raman amplifiers employing low-pressure gases in light guides. I. Theory and applications
Abstract
The theory of forward Raman amplifiers is developed by considering both monochromatic and broadband pump waves. The effects of dispersion are studied. The cases of a small angle between pump and Stokes beams and multibeam pumping in a light guide are also treated. The growths of amplified spontaneous Raman scattering and higher-order Stokes and anti-Stokes components are considered. As a result of these studies, it is concluded that a high-power forward Raman amplifier employing low-pressure gases in a light guide can be designed to operate efficiently with a stage gain of the order of one-thousand. As an application, a design of a Raman amplifier is presented that will be used as a beam combiner in an optical-multiplexer pulse-compression system for a high-power KrF laser.
- Publication:
-
Journal of the Optical Society of America B Optical Physics
- Pub Date:
- October 1986
- DOI:
- 10.1364/JOSAB.3.001374
- Bibcode:
- 1986JOSAB...3.1374P
- Keywords:
-
- Forward Scattering;
- High Power Lasers;
- Light Amplifiers;
- Optical Waveguides;
- Raman Lasers;
- Broadband;
- Coupling;
- Energy Conversion Efficiency;
- Laser Pumping;
- Low Pressure;
- Monochromatic Radiation;
- Lasers and Masers