Haoxuan Zheng, Xuanyu Hu, Yi Zheng, Changcheng Duan, Yu Xiao, Gang Xu, Xiahui Tang. Research on the beam combining technique of a 350 W blue semiconductor laser for urological applications[J]. Opto-Electronic Engineering, 2024, 51(4): 230302-1
- Opto-Electronic Engineering
- Vol. 51, Issue 4, 230302-1 (2024)
Fig. 1. Overall design for blue semiconductor laser 350 W module. (a) Laser diode 1~4; (b) Beam shaping system; (c) Beam expander; (d) Coupling lens; (e) Fiber
Fig. 2. Compressing the slow-axis beam. (a) Step-wise reflective mirror assembly; (b) Profile diagram of the compressed optical spot
Fig. 3. Process of spatial beam combining in the slow axis. (a) Spatial beam combining structure；(b) Physical structure；(c) Spot after double-unit beam combining；(d) Spot after three-unit beam combining；(e) Spot after four-unit beam combining
Fig. 4. Process of polarization beam combining in the fast axis. (a) Polarization beam combining structure；(b) Physical structure；(c) Spot after beam combining
Fig. 5. Process of fast-axis beam expansion. (a) Beam expansion structures；(b) Spot after beam expanded
Fig. 6. Process of focal coupling into the optical fiber. (a) Process of focal coupling；(b) Spot after focusing；(c) Spot in fiber
Fig. 7. Beam output experimental results. (a) Final beam combining system; (b) Power versus time curve
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Table 1. Structure parameters of arrayed blue light units
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