The birefringence of (Ca 0.28 Ba 0.72 ) 0.75 (Sr 0.60 Ba 0.40 )Nb 2 O 6 crystal is measured basing on polarization-extinction method and conoscopic interference method. Experimental results show that the birefringence in this crystal is up to 10 -5 , the natural birefringence in this crystal is (n o
Theoretical and experimental study on the conoscopic interference in uniaxial crystal (Ca0.28Ba0.72)x(Sr0.60Ba0.40)1-xNb2O6
โ Scribed by Ch. Y. Gao; H. R. Xia; J. Q. Xu; Sh. Ch. Si; H. J. Zhang; J. Y. Wang; H. L. Song
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 405 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0232-1300
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โฆ Synopsis
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 0.28 Ba 0.72 ) x (Sr 0.60 Ba 0.40 ) 1-x Nb 2 O 6 crystals were observed with the beams transmitting along optical-axes and deflection optical-axes from 0 to 140ยฐ. 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 Ca 2+ -doped were obtained in this investigation.
๐ SIMILAR VOLUMES
Generation of holes is facilitated in the Cu(Ba 0.8 Sr 0.2 ) 2 (Yb 1รx Ca x )Cu 2 O 6+z (Cu-1212) system by two independent ways, i.e., by Ca substitution (0rxr0:35) and O doping (0ozo1). The distribution of holes between the CuO 2 -(Yb 1รx Ca x )-CuO 2 block containing two identical superconductive