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

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

Fangyuan Sun1,2, Yufei Zhao1,2, Shili Shu1、*, Guanyu Hou1,2, Huanyu Lu1,2, Xin Zhang1, Lijie Wang1, Sicong Tian1, Cunzhu Tong1, and Lijun Wang1
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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    (a) Schematic of the SBC with double filters and (b) the filtering schematic by nonparallel double SFs before combining.

    Fig. 1. (a) Schematic of the SBC with double filters and (b) the filtering schematic by nonparallel double SFs before combining.

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    Far-field spots of (a) the conventional SBC and (b) the modified SBC.

    Fig. 2. Far-field spots of (a) the conventional SBC and (b) the modified SBC.

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    M2 factors of the BAL arrays with the conventional SBC and the modified SBC in the (a) fast and (b) slow axes.

    Fig. 3. M2 factors of the BAL arrays with the conventional SBC and the modified SBC in the (a) fast and (b) slow axes.

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    L–I–V characteristics of the diode laser array combined with off-axis SBC with selective feedback. The inset graph shows the efficiency characteristics of the off-axis SBC.

    Fig. 4. L–I–V characteristics of the diode laser array combined with off-axis SBC with selective feedback. The inset graph shows the efficiency characteristics of the off-axis SBC.

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    Electrical-to-optical efficiency ηEOE for both external cavity configurations as a function of driving current.

    Fig. 5. Electrical-to-optical efficiency ηEOE for both external cavity configurations as a function of driving current.

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    Lasing spectrum of BAL array by modified SBC with double SFs measured at 50 A.

    Fig. 6. Lasing spectrum of BAL array by modified SBC with double SFs measured at 50 A.

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    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)

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Aug. 10, 2018

    Accepted: Nov. 12, 2018

    Posted: Nov. 14, 2018

    Published Online: Jan. 17, 2019

    The Author Email: Shili Shu (shushili@ciomp.ac.cn)

    DOI:10.3788/COL201917.011401

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology