【摘要】 报道了用自准直法在 0 4 88μm ,0 5 3975 μm ,1 0 795 μm和 1 34 14μm激光波长上测量了含Cr3 + 离子浓度为 1 0 1at . %的Cr3 + ∶Be3 Al2 Si6O18晶体的主折射率及其温度系数 ,得到了该晶体的Sellmeier方程 ,用此结果反算了该晶体在上述 4种波长下不同温度的折射率 ,误差小于 1 0 9× 10 -4 ,最后对测量误差进行了讨论。更多还原

【Abstract】 The principal refractive indices and the thermal refractive index coefficients for Cr 3+∶Be 3Al 2Si 6O 18 crystal dopted with 1 01 wt.-% Cr 2O 3 have been accurately measured by the auto-collimation method at the wavelengths of 0 488 μm, 0 53975 μm, 1 0795 μm and 1 3414 μm, and at the temperature of 308 2 K, 328 6 K, 359 1 K and 395 4 K, respectively. The sellmeier′s equations and the thermal refractive index coefficients were obtained, and the result was certified to be accurate by error analysis.更多还原