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152 W high-power blue diode laser operated at 447 nm |
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| Authors: | Peng Wu Ling Zhang Haijuan Yu Xiandan Yuan Zhiyan Zhang Pengfei Zhao Shuzhen Zou Chaojian He Yaoyao Qi Yingying Yang Gang Li Xubao Wang Xuechun Lin |
| Affiliation: | 1. Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China;Laboratory of All-Solid-State Light Sources,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;2. Laboratory of All-Solid-State Light Sources,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;3. Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China |
| Abstract: | We demonstrate a high-power blue diode laser operated at 447 nm combining laser diodes using an optical fiber bundle.As many as 127 diode lasers at 447 nm were coupled into 400 μm/0.22NA fibers using an aspherical lens group with different focus lengths.The bare fibers were mechanically bundled through high temperature ultraviolet adhesive after the coatings of the 127 fibers were stripped.The diameter of the fiber bundle was 6 mm.The total output power of such a bundle was 152 W with electro-optical conversion efficiency of 27.56％ and the RMS power instability was less than ± 1％ within 3 h. |
| Keywords: | high power blue diode laser fiber bundle optical power combining |
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