光学学报, 2016, 36 (8): 0826002, 网络出版: 2016-08-18  

光学方解石晶体温度特性 下载: 549次

Temperature Characteristics of Optical Calcite Crystals
作者单位
曲阜师范大学激光研究所山东省激光偏光与信息技术重点实验室, 山东 曲阜 273165
摘要
利用热膨胀系数张量推导出光学方解石晶体(OCC)的任意方向热膨胀系数的表达式,确定了晶体的零膨胀方向;推导出晶体任意方向双折射率的温度变化量的表达式,并给出晶体中任意方向光程差随温度的变化关系。结果表明,对应方位角为65.35°或114.65°的方向是OCC的零膨胀方向;温度对晶体中光程差的影响随方位角的变化而变化,在垂直于晶体光轴的方向这种影响最大。
Abstract
Through the coefficient of thermal expansion tensor, the formula of the omnidirectional thermal expansion coefficient of the optic calcite crystal (OCC) is deduced, and the zero-expansion direction of the OCC is determined. The expression of the omnidirectional birefringence versus temperature is derived, and the relationship between the omnidirectional optical path difference and temperature is also provided. These results show that the zero-expansion of the OCC occurs at the azimuth angle of 65.35° or 114.65°. The effect of temperature on the optical path difference is subject to the azimuth angle and along the direction perpendicular to the optical axis, this effect is the most.
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吴福全, 吴闻迪, 苏富芳, 史萌. 光学方解石晶体温度特性[J]. 光学学报, 2016, 36(8): 0826002. Wu Fuquan, Wu Wendi, Su Fufang, Shi Meng. Temperature Characteristics of Optical Calcite Crystals[J]. Acta Optica Sinica, 2016, 36(8): 0826002.

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