Efficient conversion of Nd:YAG laser radiationto the eye-safe spectral region by stimulated Raman scatteringin BaWO{sub 4} crystal

The possibility of increasing the efficiency of one-cascade 1.5-{mu}m SRS lasing in a BaWO{sub 4} crystal placed into an external SRS cavity and pumped by a nanosecond Nd:YAG laser at a wavelength of 1.34 {mu}m is studied. Conditions that prevent energy outflow to the second Stokes SRS component wit...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2010-10, Vol.40 (8)
Main Authors: Basiev, Tasoltan T, Basieva, M N, Ivleva, Lyudmila I, Osiko, Vyacheslav V, Gavrilov, A V, Ershkov, M N, Smetanin, Sergei N, Fedin, Aleksandr V
Format: Article
Language:English
Subjects:
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM TUNGSTATES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CRYSTALS
EFFICIENCY
LASER CAVITIES
LASERS
NEODYMIUM LASERS
OPTICAL PUMPING
OXYGEN COMPOUNDS
PULSES
PUMPING
RAMAN EFFECT
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLID STATE LASERS
STOKES PARAMETERS
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS
WAVELENGTHS
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Summary:The possibility of increasing the efficiency of one-cascade 1.5-{mu}m SRS lasing in a BaWO{sub 4} crystal placed into an external SRS cavity and pumped by a nanosecond Nd:YAG laser at a wavelength of 1.34 {mu}m is studied. Conditions that prevent energy outflow to the second Stokes SRS component with a wavelength of 1.78 {mu}m are found, which allowed us to increase the efficiency of one-cascade intracavity SRS lasing at 1.53 {mu}m up to 60% and the slope efficiency up to the quantum limit ({approx}80% at the SRS pulse energy up to 20 mJ). The use of pumping by laser pulse trains provided the possibility of increasing the 1.53-{mu}m SRS radiation energy to 40 mJ in a three-pulse train. (nonlinear optical phenomena)
ISSN:1063-7818
DOI:10.1070/QE2010V040N08ABEH014376