热应力双折射介质中的光传输研究  

Light transmission in thermal stress-induced birefringent medium

作　　者：岑兆丰[1] 李晓彤[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,杭州310027

出　　处：《物理学报》2010年第8期5784-5790,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10875105;60977010);国家高技术研究发展计划(批准号:2009AA12Z108);航空科学基金(批准号:20060112111;20090176001)资助的课题~~

摘　　要：计算了简化的平行平板中的温度和热应力分布,根据光弹性理论得到了介质内部折射率的改变,采用矢量微分算法模拟光线在介质中传输的情况,预测了接收面上的光强分布和条纹形状,程序输出图形和作为对照的光弹性实验的结果符合良好,证明了上述分析方法和光传输计算的正确性,为进一步完善光学系统成像质量提供参考.In this paper the temperature and thermal stress distribution in a simplified-mode transparent slab is calculated and then variation of refractive index is acquired based on the photo-elastic theory. Using the vector differential algorithm the refractive behavior of rays in such media is simulated,and luminous intensity distribution and shape of fringes at the receiving plane is predicted. The output of the program is in coincidence with the check experiment based on photo- elasticity technique,which indicates the correctness of our analysis method and light transmission calculation method. This research provides a practical means for improving the imaging quality of optical instruments.

关 键 词：光弹性 应力双折射 光线追迹 

分 类 号：O435.1[机械工程—光学工程]