thermo-optical instability

例句：

1. 1. Thermal lensing is a phenomenon where light bends due to temperature differences between the lens and the medium it's passing through.
   热透镜现象是光线因透镜和通过它的介质之间温度差异而弯曲的现象。
2. 2. This material has been found to be thermo-optically unstable at high temperatures.
   这种材料被发现在高温下具有热光不稳定性。
3. 3. The stability of the system was compromised by the thermo-optical instability caused by the external disturbances.
   由于外部干扰引起的热光不稳定性，系统的稳定受到了损害。