Influence of Cr3+ doping on the spectroscopies and laser performance of Cr,Nd:YAG crystal operated at 1.06 μm

Huili Zhang; Dunlu Sun; Jianqiao Luo; Zhongqing Fang; Xuyao Zhao; Cong Quan; Lunzhen Hu; Maojie Cheng; Qingli Zhang; Shaotang Yin

doi:10.1117/1.OE.58.2.027116

23 February 2019 Influence of Cr³⁺ doping on the spectroscopies and laser performance of Cr,Nd:YAG crystal operated at 1.06 μm

Huili Zhang, Dunlu Sun, Jianqiao Luo, Zhongqing Fang, Xuyao Zhao, Cong Quan, Lunzhen Hu, Maojie Cheng, Qingli Zhang, Shaotang Yin

Author Affiliations +

Optical Engineering, Vol. 58, Issue 2, 027116 (February 2019). https://doi.org/10.1117/1.OE.58.2.027116

Abstract

We present a high-quality Cr,Nd:YAG crystal with 1.0 at. % Cr^3 + and 1.1 at. % Nd^3 + grown successfully by the Czochralski method. Spectroscopy results indicate that codoped Cr^3 + ions are advantageous for improving pumping efficiency. The maximum average power of 20.24 W operated at 40 Hz and 1.06 μm is obtained on the Cr,Nd:YAG crystal, with electrical-to-optical and slope efficiencies that correspond to 3.00% and 3.77%. Meanwhile, the maximum average power of only 13.32 W is obtained on the Nd:YAG crystal, with the electrical-to-optical and slope efficiencies of 1.97% and 2.47%, respectively. In addition, the laser beam quality of the Cr,Nd:YAG crystal is comparative with that of the Nd:YAG crystal. Therefore, the Cr,Nd:YAG is a promising laser crystal with higher laser performance and stronger radiation-resistant ability than the Nd:YAG crystal. Thus, the Cr,Nd:YAG crystal can be applied to high-power systems and radiant environments.

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Huili Zhang, Dunlu Sun, Jianqiao Luo, Zhongqing Fang, Xuyao Zhao, Cong Quan, Lunzhen Hu, Maojie Cheng, Qingli Zhang, and Shaotang Yin "Influence of Cr³⁺ doping on the spectroscopies and laser performance of Cr,Nd:YAG crystal operated at 1.06 μm," Optical Engineering 58(2), 027116 (23 February 2019). https://doi.org/10.1117/1.OE.58.2.027116

Received: 26 October 2018; Accepted: 6 February 2019; Published: 23 February 2019

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