High beam quality broad-area diode lasers by spectral beam combining with double filters

Fangyuan Sun; Yufei Zhao; Shili Shu; Guanyu Hou; Huanyu Lu; Xin Zhang; Lijie Wang; Sicong Tian; Cunzhu Tong; Lijun Wang

doi:10.3788/COL201917.011401

Journals >Chinese Optics Letters >Volume 17 >Issue 1 >Page 011401 > Article

Chinese Optics Letters
Vol. 17, Issue 1, 011401 (2019)

High beam quality broad-area diode lasers by spectral beam combining with double filters

Fangyuan Sun^1,2, Yufei Zhao^1,2, Shili Shu^1,*, Guanyu Hou^1,2..., Huanyu Lu^1,2, Xin Zhang¹, Lijie Wang¹, Sicong Tian¹, Cunzhu Tong¹ and Lijun Wang¹|Show fewer author(s)

Author Affiliations

¹State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

²University of Chinese Academy of Sciences, Beijing 100049, China

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DOI: 10.3788/COL201917.011401 Cite this Article Set citation alerts

Fangyuan Sun, Yufei Zhao, Shili Shu, Guanyu Hou, Huanyu Lu, Xin Zhang, Lijie Wang, Sicong Tian, Cunzhu Tong, Lijun Wang, "High beam quality broad-area diode lasers by spectral beam combining with double filters," Chin. Opt. Lett. 17, 011401 (2019) Copy Citation Text

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Abstract

A modified spectral beam combining (SBC) approach based on double asymmetrical filters was proposed. By using this scheme, the high-order lateral modes at the edge of the far-field pattern can be suppressed in the external cavity, and the beam quality in the slow-axis direction was improved from 16.1 to 13.4 compared to the conventional SBC. In the meanwhile, the electrical-to-optical efficiency from the modified SBC was more than 40% with an output power of 34.1 W, which is similar to that of the conventional SBC.