Phase-matched broad-band Raman amplifiers

Author

Bobbs, Bradley ; Goldstone, J.A. ; Johnson, M.M.

Author_Institution

Rocketdyne Div., Rockwell Int. Corp., Canoga Park, CA, USA

Volume

30

Issue

8

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1896

Lastpage

1906

Abstract

The use of angle-tuned phase matching is shown by analysis and computer simulations to reduce limitations an the pump-laser bandwidth in Raman amplifiers of either near-collinear or crossed-beam geometries. This technique requires careful adjustment of the input beam angles and the use of prisms or gratings in the input and output beams. Simultaneous high conversion of multiple spectral lines or a broad-band spectrum can he obtained over a much wider range of temporal- and spatial-pump-intensity variations than in conventional designs. Intensity-phase print-through from multiple-line coupling can be significantly reduced, improving beam quality

Keywords

Raman lasers; diffraction gratings; digital simulation; optical prisms; optical pumping; angle-tuned phase matching; beam quality; broad-band spectrum; computer simulations; crossed-beam geometries; gratings; input beam angles; intensity-phase print-through; multiple spectral lines; multiple-line coupling; near-collinear beam geometries; output beams; phase-matched broad-band Raman amplifiers; prisms; pump-laser bandwidth; spatial-pump-intensity variations; temporal-pump-intensity variations; Bandwidth; Frequency conversion; Geometrical optics; Geometry; Laser beams; Laser excitation; Optical polarization; Pump lasers; Raman scattering; Stimulated emission;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.301653

Filename

301653