DocumentCode :
355172
Title :
SBS suppression of amplified spontaneous emission in high-gain amplifiers
Author :
Ni, C.K. ; Kung, Andrew H.
Author_Institution :
Inst. of Atomic & Molecular Sci., Acad. Sinica, Taipei, Taiwan
fYear :
1996
fDate :
2-7 June 1996
Firstpage :
449
Abstract :
Summary form only given. Optical phase conjugation using stimulated Brillouin scattering (SBS) is widely used in high-average-power solid-state lasers and multipass amplifiers for correction of problems brought on by thermally induced birefringence and depolarization and for pulse compression. Diffraction-limited beams are now routinely obtained in 100 W average-power high-repetition-rate Nd:YAG laser systems where a SBS mirror is an integral part of the system. In these applications, the pump lasers used all have narrow bandwidths, typically <1 GHz. The reason for this is well-known in that the SBS threshold for a noisy (multi-frequency) pump is higher than that for a single-longitudinal-mode pump or one with just a few modes. So, in order to obtain high reflectivity using minimal power for the SBS mirror, narrow-bandwidth lasers are used. We have taken note of this property of SBS and explored its utility to solve another important problem in laser amplifiers: the suppression of amplified spontaneous emission.
Keywords :
laser beams; laser mirrors; laser noise; neodymium; optical phase conjugation; optical pulse compression; optical pumping; reflectivity; solid lasers; stimulated Brillouin scattering; superradiance; 100 W; SBS; SBS mirror; SBS suppression; SBS threshold; YAG:Nd; YAl5O12:Nd; amplified spontaneous emission suppression; average-power high-repetition-rate Nd:YAG laser systems; depolarization; diffraction-limited beams; high reflectivity; high-average-power solid-state lasers; high-gain laser amplifiers; laser noise; multipass amplifiers; narrow-bandwidth lasers; optical phase conjugation; pulse compression; pump lasers; single-longitudinal-mode pump; stimulated Brillouin scattering; thermally induced birefringence; Brillouin scattering; Laser modes; Mirrors; Nonlinear optics; Optical amplifiers; Optical pulse compression; Pulse amplifiers; Pump lasers; Spontaneous emission; Stimulated emission;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
Type :
conf
Filename :
864909
Link To Document :
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