ZHANG Fang, WANG Zheng-ping, XU Xin-guang. Anisotropy of stimulated Raman scattering in SrWO<sub>4</sub> crystal[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 39-43
ZHANG Fang, WANG Zheng-ping, XU Xin-guang. Anisotropy of stimulated Raman scattering in SrWO<sub>4</sub> crystal[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 39-43 DOI: 10.3788/OPE.20142201.0039.
Anisotropy of stimulated Raman scattering in SrWO4 crystal
The relationship between stimulated Raman scattering characteristics and the polarization direction of a pump light was researched by taking an a-cut SrWO
4
crystal which belongs to the tetragonal crystal system as a research object. Using a 532 nm light as the pump source and a single passing way as implementation
the anisotropy for the SRS’ gain of
a
-cut SrWO
4
crystal was determined. The experimental results on the strongest Raman frequency shifting of 924 cm
-1
come from the symmetrical stretching vibration of [WO
4
]
2-
tetrahedron show that the gain coefficients appear two maximum values of 10.1 cm/GW and 14.2 cm/GW respectively when the pump light is polarized on
a
and
c
axes
and the gain coefficients present two of the same minimal values of 7.1 cm/GW when the pump light is polarized along the bisector of
a
and
c
axes. The results are interpreted using a Raman tensor and the nonpolar Raman scattering intensity theory
which demonstrates that experimental results in this paper are in good agreement with that of the theory.
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references
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