24 August 2017 Diode-pumped passively Q-switched Nd : GdNbO4 laser with Cr4+ : YAG saturable absorber
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Abstract
Diode-pumped passively Q-switched laser operation of a Nd:GdNbO4 crystal at 1066 nm using Cr4+:YAG as a saturable absorber was demonstrated for the first time. Using two different Cr4+:YAG crystals with initial transmission of 95% and 90% as the saturable absorber for Q-switching, a maximum average output power of 0.50 and 0.41 W was obtained at a pulse repetition frequency of 28.7 and 17.8 KHz, respectively. The shortest pulse width of 23 ns, the largest pulse energy of 22.7  μJ, and the highest peak power of 974.1 W were obtained when the Cr4+:YAG crystal was used with an initial transmission of 90%. The shortest pulse width of 33.3 ns, the largest pulse energy of 17.3  μJ, and the highest peak power of 519 W were obtained when the Cr4+:YAG crystal was used with an initial transmission of 95%. All the results indicate that the Nd:GdNbO4 crystal is a material suitable for diode-pumped passively Q-switched lasers.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shoujun Ding, Shoujun Ding, Xiaotao Yang, Xiaotao Yang, Qingli Zhang, Qingli Zhang, Wenpeng Liu, Wenpeng Liu, Jianqiao Luo, Jianqiao Luo, Guihua Sun, Guihua Sun, Yuefei Ma, Yuefei Ma, Dunlu Sun, Dunlu Sun, } "Diode-pumped passively Q-switched Nd : GdNbO4 laser with Cr4+ : YAG saturable absorber," Optical Engineering 56(8), 086111 (24 August 2017). https://doi.org/10.1117/1.OE.56.8.086111 . Submission: Received: 19 June 2017; Accepted: 1 August 2017
Received: 19 June 2017; Accepted: 1 August 2017; Published: 24 August 2017
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