Beam cleanup and low distortion amplification in efficient high-gain hydrogen Raman amplifiers

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.3.001428· OSTI ID:5261451

Komine, H; Long, Jr, W H; Stappaerts, E A; Brosnan, S J

We report the results of a theoretical and experimental investigation of two important properties of Raman converters. The first property is Raman beam cleanup, which refers to the generation of high-quality Stokes beams in a Raman amplifier pumped by laser beams of poor spatial quality. The second is nearly distortion-free amplification of aberrated Stokes beams in a Raman amplifier pumped by good-quality laser beams. A parallel beam geometry was used with collinear pump and Stokes beams. In both cases, excellent energy-conversion efficiencies into the first Stokes order, of the order of 60%, were demonstrated at high amplifier gains of 100 to 1000. The spatial characteristics of the amplified beams were found to be in good agreement with model predictions.

• Research Organization: Northup Research and Technology Center, One Research Park, Palos Verdes Peninsula, California 90274
• OSTI ID: 5261451
• 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
HYDROGEN
NONLINEAR OPTICS
RAMAN EFFECT
LASER RADIATION
AMPLIFICATION
AMPLIFIERS
BEAM OPTICS
COMPUTER CODES
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
NONMETALS
OPTICS
RADIATIONS
420300* - Engineering- Lasers- (-1989)