本文开展了多波长纳秒脉冲拉曼激光对行间转移CCD相机的损伤实验。分别研究了496 nm、574 nm、630 nm单波长拉曼激光与混合输出的多波长拉曼激光对CCD的点损伤、线损伤和面损伤情况，测量了不同波长拉曼激光的损伤阈值区间，并根据损伤情况统计拟合，获得了不同波长拉曼激光能量与损伤概率的关系曲线。实验结果表明：混合波长拉曼激光对CCD的损伤阈值低于单波长拉曼激光的损伤阈值，不同波长拉曼激光对于CCD的损伤阈值也存在区别，其中630 nm拉曼激光的损伤阈值低于496 nm激光，574 nm激光的损伤阈值介于496 nm和630 nm拉曼激光之间。在此基础上，通过分析CCD不同损伤情况的显微图像，以及受损伤CCD的电子学特性，对拉曼激光损伤CCD的机理进行了探讨。

A dual-wavelength synchronously mode-locked homogeneously broadened bulk laser operating at 1985.6 and 1989 nm is presented for the first time, to the best of our knowledge, which delivers a maximum output power of 166 mW and a repetition rate of 85 MHz. The pulse duration was measured to be 16.8 ps by assuming a sech2 pulse shape. The recorded autocorrelation trace showed frequency beating signals with an interval of 3.8 ps and a full width at half-maximum duration of 2 ps, corresponding to an ultrahigh beating frequency of about 0.26 THz, which agrees well with the frequency difference of the emitted two spectral peaks. The results indicated that such a kind of dual-wavelength mode-locked Tm:YAlO₃ laser could be potentially used for generating terahertz radiations.