Acta Optica Sinica, Volume. 21, Issue 3, 383(2001)
Progress of Optical Homogeneity and Weak-Absorption of Large-Sized Sapphire Crystal Used in LIGO Project
The latest progress in the study of optical homogeneity and weak-absorption of large-sized sapphire crystal (φ113 mm×70 mm) is reported. The polishing precision of the whole crystal surface reaches 1.666λ, and the transfer wavefront distortion is 0.584λ. The transmission is higher than 80% at UV waveband and than 86% at VIS-NIR waveband. The weak-absorption coeffcient is 35×10-6 /cm～65×10-6 /cm.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Progress of Optical Homogeneity and Weak-Absorption of Large-Sized Sapphire Crystal Used in LIGO Project[J]. Acta Optica Sinica, 2001, 21(3): 383
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