Bowen Fu, Qinnan Zhang, Yong Tian, Jindong Tian. Analysis of thermal effect of high-power semiconductor laser spectral combining grating[J]. High Power Laser and Particle Beams, 2022, 34(3): 031018
- High Power Laser and Particle Beams
- Vol. 34, Issue 3, 031018 (2022)
Fig. 1. Schematic diagram of laser structure
Fig. 2. Periodic structure of diffraction grating
Fig. 3. The geometric model of the diffraction grating substrate
Fig. 4. Flow chart of high-power semiconductor laser spectrum combining COMSOL implementation
Fig. 5. Light thermal simulation results
Fig. 6. Stress and deformation nephogram at 10 min
Fig. 7. Variation curves of stress and deformation at the center of diffraction grating with different thickness
Fig. 8. Grating surface deformation in each direction and −1 order diffraction efficiency variation curves
Fig. 9. Simulation results of beam angle and position offset
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Table 1. Periodic boundary parameters of wire grid unit
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Table 2. Physical parameters of common diffraction grating substrate materials
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