The change of quartz crystal refractive index is measured under the different outside force, and the elasto-optical coefficient is determined.
通过测量石英晶体在不同的外力下折射率的变化情况，确定了晶体的弹光系数。
The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that KABO is a negative uniaxial optical crystal with moderate birefringence.
用最小偏离法测试了可见光区十二个波段处的晶体折射率，结果表明KABO晶体属负单轴晶，具有适中的双折射率。
The main refractive indices of calcite crystal are measured by the means of auto-collimation, and the thermo-optical coefficients are calculated.
用自准直方法测量了冰洲石晶体的主折射率并计算出了折射率温度系数。
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