Ghosh G
Appl Opt. 1998 Sep 20;37(27):6456-8. doi: 10.1364/ao.37.006456.
Birefringence (B(f)) and its temperature derivative (dB(f)/dT) determine the temperature characteristics of nonlinear optical laser devices. The birefringence and its dispersion for a CdGeAs(2) nonlinear crystal are analyzed critically by use of a recently introduced, physically meaningful, dispersion equation at different operating temperatures from 14 to 450 K, which fits reasonably well with the experimental data. This equation is based on the average electronic absorption gap and the lattice absorption gap at the short- and long-wavelength transparency limits, respectively.
双折射（B(f)）及其温度导数（dB(f)/dT）决定了非线性光学激光器件的温度特性。利用最近引入的、具有物理意义的色散方程，在14至450K的不同工作温度下，对CdGeAs(2)非线性晶体的双折射及其色散进行了严格分析，该方程与实验数据拟合得相当好。该方程分别基于短波长和长波长透明极限处的平均电子吸收间隙和晶格吸收间隙。
