High-power eye-safe KTA-OPO driven by YVO4/Nd:YVO4 composite laser |
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| Authors: | YM Duan HY Zhu G Zhang HY Wang YJ Zhang |
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| Institution: | 1. College of Physics and Electronic Information, Wenzhou University, Wenzhou 325035, China;2. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;3. Crystech Inc., Qingdao 266100, China;1. School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Jinan, Shandong 250100, China;2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, PR China;1. Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China;2. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;3. University of Chinese Academy of sciences, Beijing 100049, China;4. School of Electronic Engineering and Photo-electric Technology, Nanjing University of Science and Technology, Nanjing 210094, China;1. State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | We present a high-power 1.53 μm laser based on intracavity KTA-OPO driven by diode-end-pumped acousto-optical Q-switched YVO4/Nd:YVO4 composite. The composite crystal was utilized for reducing the thermal effect, and the mode mismatch compensating OPO cavity was designed for efficient OPO conversion. The output power of eye-safe laser at 1535 nm was up to 4.4 W with the pump power of 27 W, corresponding to a diode-to-signal conversion efficiency of 16.3%. To our knowledge, this is the highest output power in diode-end-pumped circumstances. In the experiment, the strong yellow light generated by Raman conversion and frequency doubling in the KTA crystal was observed. |
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