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Chinese Journal of Lasers, Volume. 51, Issue 8, 0801006(2024)

Transverse Mode Characteristics Analysis of Semiconductor Laser with High‐Order Surface Curved Gratings

Hongjin Liang, Yonggang Zou*, Jie Fan, Xiyao Fu, Ke Shi, and Kun Tian
Author Affiliations
  • State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun 130022, Jilin, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (17)
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    Figures & Tables(12)
    Model diagram of surface high-order curved grating laser

    Fig. 1. Model diagram of surface high-order curved grating laser

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    Schematic of surface high-order curved grating

    Fig. 2. Schematic of surface high-order curved grating

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    Optical field distributions under different modes

    Fig. 3. Optical field distributions under different modes

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    Layer refractive index distribution of simulation model

    Fig. 4. Layer refractive index distribution of simulation model

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    Coupling coefficient and normalized intensity versus grating duty cycle

    Fig. 5. Coupling coefficient and normalized intensity versus grating duty cycle

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    Coupling coefficient and normalized intensity versus etch depth

    Fig. 6. Coupling coefficient and normalized intensity versus etch depth

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    SEM images of curved grating. (a) Surface view 1; (b) surface view 2; (c) sectional view

    Fig. 7. SEM images of curved grating. (a) Surface view 1; (b) surface view 2; (c) sectional view

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    Surface high order curved grating semiconductor laser

    Fig. 8. Surface high order curved grating semiconductor laser

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    Output characteristic curves of device. (a) P-I-V curves; (b) spectrum at 1 A current; (c) spectrum at 2 A current

    Fig. 9. Output characteristic curves of device. (a) P-I-V curves; (b) spectrum at 1 A current; (c) spectrum at 2 A current

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    Spot patterns at different currents. (a)(b)(c) Curved grating DFB-LD; (d)(e)(f) FP-LD

    Fig. 10. Spot patterns at different currents. (a)(b)(c) Curved grating DFB-LD; (d)(e)(f) FP-LD

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    Slow axis divergence angles at different currents. (a)(b)(c) Curved grating DFB-LD; (d)(e)(f) FP-LD

    Fig. 11. Slow axis divergence angles at different currents. (a)(b)(c) Curved grating DFB-LD; (d)(e)(f) FP-LD

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    Fast axis divergence angles of curved grating DFB-LD at different currents. (a) 0.5 A; (b) 1.2 A; (c) 2.1 A

    Fig. 12. Fast axis divergence angles of curved grating DFB-LD at different currents. (a) 0.5 A; (b) 1.2 A; (c) 2.1 A

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    Hongjin Liang, Yonggang Zou, Jie Fan, Xiyao Fu, Ke Shi, Kun Tian. Transverse Mode Characteristics Analysis of Semiconductor Laser with High‐Order Surface Curved Gratings[J]. Chinese Journal of Lasers, 2024, 51(8): 0801006

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    Paper Information

    Category: laser devices and laser physics

    Received: Dec. 6, 2023

    Accepted: Jan. 16, 2024

    Published Online: Apr. 11, 2024

    The Author Email: Zou Yonggang (zouyg@cust.edu.cn)

    DOI:10.3788/CJL231481

    CSTR:32183.14.CJL231481

    Topics

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