High-power forward Raman amplifiers employing low-pressure gases in light guides. I. Theory and applications

Journal Article · Wed Oct 01 00:00:00 EDT 1986 · J. Opt. Soc. Am. B: Opt. Phys.; (United States)

DOI:https://doi.org/10.1364/JOSAB.3.001374· OSTI ID:5226513

Partanen, J P; Shaw, M J

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 studied. The growth of amplified spontaneous Raman scattering and higher-order Stokes and anti-Stokes components are considered. As a result of these studies, we conclude 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 10/sup 3/. As an application, we present a design of a Raman amplifier that will be used as a beam combiner in a optical-multiplexer pulse-compression system for a high-power KrF laser. We also present some practical considerations that should be taken into account when this kind of system is designed.

• Research Organization: Laser Division, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, United Kingdom
• OSTI ID: 5226513
• Journal Information: J. Opt. Soc. Am. B: Opt. Phys.; (United States), Vol. 3:10
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS LASERS
GAIN
NONLINEAR OPTICS
GASES
LASER RADIATION
PULSES
RAMAN EFFECT
VISIBLE RADIATION
AMPLIFICATION
DESIGN
EFFICIENCY
OPTICAL DISPERSION
OPTICAL PROPERTIES
OPTICAL PUMPING
STOKES PARAMETERS
ELECTROMAGNETIC RADIATION
FLUIDS
LASERS
OPTICS
PHYSICAL PROPERTIES
PUMPING
RADIATIONS
420300* - Engineering- Lasers- (-1989)