Theoretical and experimental study on the conoscopic interference in uniaxial crystal (Ca0.28Ba0.72)x(Sr0.60Ba0.40)1-xNb2O6 by Ch. Y. Gao, H. R. Xia, J. Q. Xu, Sh. Ch. Si, H. J. Zhang, J. Y. Wang, and H. L. Song

Crystal Research and Technology

Cryst. Res. Technol. 42, 1126 (2007) - Abstract -

Theoretical and experimental study on the conoscopic interference in uniaxial crystal (Ca_0.28Ba_0.72)_x(Sr_0.60Ba_0.40)_1-xNb₂O₆

Ch. Y. Gao, H. R. Xia, J. Q. Xu, Sh. Ch. Si, H. J. Zhang*, J. Y. Wang*, and H. L. Song*

School of Physics and Microelectronics of Shandong University, Jinan, 250100, P. R. China
*Institute of Crystal Materials, Shandong University, Jinan, 250100, P. R. China

Keywords	conoscopic interference, birefringence, uniaxial crystal
PACS	42.70.Mp, 42.65.-k, 74.25.Gz
DOI	10.1002/crat.200710930

Conoscopic interference of polarized light for the white-light and LPS-7,5Volts direct current semiconductor laser (Green light) with wavelength at 532 nm in (Ca_0.28Ba_0.72)_x(Sr_0.60Ba_0.40)_1-xNb₂O₆ crystals were observed with the beams transmitting along optical-axes and deflection optical-axes from 0 to 140°. Endo-exo variation from looseness to tightness of conoscopic interference patterns were analyzed in theory. A hyperbolic black cross of interference patterns were observed as well as its formation process was proposed in this paper. Also, the inferences of the birefringence with different Ca²⁺-doped were obtained in this investigation.

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