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Theoretical and experimental study on the conoscopic interference in uniaxial crystal (Ca0.28Ba0.72)x(Sr0.60Ba0.40)1‐xNb2O6
Authors:Ch. Y. Gao  H. R. Xia  J. Q. Xu  Sh. Ch. Si  H. J. Zhang  J. Y. Wang  H. L. Song
Abstract: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 (Ca0.28Ba0.72)x(Sr0.60Ba0.40)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. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Keywords:conoscopic interference  birefringence  uniaxial crystal
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