Self-Q-switched and mode-locked 946 nm Cr,Nd:YAG laser |
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| Authors: | Qinan Li Sumei Wang Yuxian Shi Dongxiang Zhang Zhiguo Zhang |
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| Institution: | a Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
b North China Research Institute of Electro-Optics, Beijing 100015, China |
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| Abstract: | A simultaneous self-Q-switched and mode-locked diode-pumped 946 nm laser by using a Cr,Nd:YAG crystal as gain medium as well as saturable absorber is demonstrated for the first time as we know. The maximum average output power of 751 mW with a slope efficiency of 18.38% is obtained at an intra-cavity average peak power intensity of 4.83 × 106 W/cm2. Under this circumstance, the repetition rate of Q-switched envelopes is 9.63 kHz and the pulse width is about 460 ns. Almost 100% mode-locked modulation depth is obtained at all time in the experiment process whether the incident pump power is low or high. The repetition rate of mode-locked pulses within a Q-switched envelope is 135.13 MHz and the mode-locked pulse width is within 600 ps. The laser produces high-quality pulses in TEM00-mode in the simultaneous self-Q-switched and mode-locked experiment. |
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| Keywords: | 42 55 Xi 42 60 Fc 42 60 Gd |
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