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Stimulated-Brillouin-scattering-suppressed high-power single-frequency polarization-maintaining Raman fiber amplifier with longitudinally varied strain for laser guide star |
Optics Letters, Vol. 37, Issue 22, pp. 4796-4798 (2012)
http://dx.doi.org/10.1364/OL.37.004796
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Abstract
An up to 44 W, 1 MHz linewidth, 1178 nm CW laser is obtained by Raman amplification of a distributed feedback diode laser in a variably strained polarization-maintaining fiber with a record-high optical efficiency of 52%, pumped by a linearly polarized 1120 nm fiber laser. A polarization extinction ratio of 30 dB is achieved due to the all-polarization-maintaining configuration and the polarization dependence of Raman gain. The strain distribution is designed according to the signal power evolution along the fiber. A 20 times reduction in the effective stimulated Brillouin scattering coefficient is achieved. A 24.3 W 589 nm laser is generated by an external resonant doubling cavity with an optical efficiency of 68.5%. The laser is locked to 589.1591 nm for a laser guide star.
© 2012 Optical Society of America
OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3550) Lasers and laser optics : Lasers, Raman
(190.2620) Nonlinear optics : Harmonic generation and mixing
ToC Category:
Nonlinear Optics
History
Original Manuscript: August 29, 2012
Revised Manuscript: September 30, 2012
Manuscript Accepted: October 4, 2012
Published: November 15, 2012
Citation
Lei Zhang, Jinmeng Hu, Jianhua Wang, and Yan Feng, "Stimulated-Brillouin-scattering-suppressed high-power single-frequency polarization-maintaining Raman fiber amplifier with longitudinally varied strain for laser guide star," Opt. Lett. 37, 4796-4798 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-22-4796
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