物理
硅
吸收(声学)
光学
波长
衰减系数
晶体硅
薄脆饼
光电子学
调制(音乐)
声学
作者
J. Steinlechner,Christoph Krüger,N. Lastzka,S. Steinlechner,A. Khalaidovski,R. Schnabel
标识
DOI:10.1088/0264-9381/30/9/095007
摘要
Crystalline silicon is currently being discussed as test-mass material for future generations of gravitational wave detectors that will operate at cryogenic temperatures. We present optical absorption measurements on a large-dimension sample of crystalline silicon at a wavelength of 1550nm at room temperature. The absorption was measured in a monolithic cavity setup using the photo-thermal self-phase modulation technique. The result for the absorption coefficient of this float-zone sample with a specific resistivity of 11kOhm cm was measured to be \alpha_A=(264 +/- 39)ppm/cm.
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