Diode-pumped high-power cw blue laser at 473 nm with a compact three-element cavity |
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| Institution: | 1. Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China;2. North China Research Institute of Electro-Optics, Beijing 100015, China;1. School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan;2. Division of Mechanical Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan;3. Chinese Academy of Science, Guangzhou Institute of Energy Conversion, No.2 Nengyuan Rd. Wushan, Tianhe District, Guangzhou 510640, PR China;1. College of Physics, Jilin University, Changchun, 2699 Qianjin St., Changchun 130012, People''s Republic of China;2. Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska, 01033 Kyiv, Ukraine;3. V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41 Prosp. Nauky, 03680 Kyiv, Ukraine;4. Corporation Science Park Taras Shevchenko University of Kyiv, 60, Volodymyrska Str., 01033 Kyiv, Ukraine;1. School of Computer and Communication Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China;2. School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China;3. School of Electronics Information Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, Tianjin 300384, China;1. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China;2. Beijing Engineering Research Center of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China;3. Beijing Spacecrafts, China Academy of Space Technology, Beijing 100094, China |
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| Abstract: | We report on a diode-pumped cw Nd:YAG laser operating at 946 nm with a maximum output power of 3.3 W and a slope efficiency of 22% with respect to the incident pump power of 17.5 W. Intracavity frequency doubling with nonlinear crystal LBO yielded a single-ended blue output power of 590 mW with optical conversion efficiency of 3.4%. A very simple, compact three-element cavity of 35 mm long was used. The power fluctuation of the blue laser was 4.3% (rms) at output power level of 400 mW. Transverse mode hopping was observed at higher output power. |
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