A mode-locked and Q-switched short pulse laser using the Nd³⁺/Cr³⁺:YAG ceramic has been constructed with a SESAM and Cr⁴⁺:YAG crystal optical switch based on excite state absorption (ESA). Laser oscillations of the pulse laser were observed experimentally. The Nd/Cr:YAG ceramic laser has a high conversion efficiency from white light (such as lamp light or solar light) to the laser. The Nd/Cr:YAG ceramic has a higher laser gain than the Nd:YAG laser for the same pumping power. The laser oscillation can be obtained very easily. A single-mode-locked laser pulse with fast modulation on the order of 100 ps was obtained in some pump power regimes when using the Cr⁴⁺:YAG crystal. The obtained pulse duration of the short pulse was a few hundred ps. A maximum peak power of 60 kW was obtained when using a SESAM. The same level of peak power (60 kW) was also obtained when using the Cr⁴⁺:YAG crystal.

中文翻译：

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调Q锁模Nd / Cr：YAG陶瓷脉冲激光器

已经使用SESAM和Cr ⁴⁺：YAG晶体光开关基于激发态吸收（ESA）构造了使用Nd ³⁺ / Cr ³⁺：YAG陶瓷的锁模调Q短脉冲激光器。通过实验观察到脉冲激光的激光振荡。Nd / Cr：YAG陶瓷激光器从白光（例如灯光或太阳光）到激光器的转换效率很高。在相同的泵浦功率下，Nd / Cr：YAG陶瓷比Nd：YAG激光具有更高的激光增益。激光振荡很容易获得。当使用Cr ⁴⁺时，在某些泵浦功率范围内获得了具有100 ps量级快速调制的单模锁定激光脉冲。：YAG水晶。所获得的短脉冲的脉冲持续时间为几百ps。使用SESAM时，可获得60 kW的最大峰值功率。使用Cr ⁴⁺：YAG晶体时，也可获得相同水平的峰值功率（60 kW）。