Researching | Experimental Study on High-Power Laser Beam Combining Using Dichroic Mirrors

Laser & Optoelectronics Progress, Volume. 60, Issue 15, 1514002(2023)

Experimental Study on High-Power Laser Beam Combining Using Dichroic Mirrors

Ye Zheng^***, Miao He, Xiaoxi Liu, Ziyang Ma, Jianhua Chen, Miao Yu, Siyuan Li, Yi Cao, Junlong Wang^**, and Xuefeng Wang^*

Author Affiliations

Beijing Institute of Aerospace Control Devices, Beijing 100094, China

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References (21)

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Fig. 1. Coating test curves of dichroic mirrors

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Fig. 2. Diagram of optical setup of incident fiber laser

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Fig. 3. Output spectra of 1059 nm fiber laser

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Fig. 4. Beam quality of 1059 nm fiber laser at 4 kW output power

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Fig. 5. Diagram of optical setup of three-channel laser beam combining using dichroic mirrors

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Fig. 6. Variation trend of combined power and efficiency versus incident power

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Fig. 7. Beam quality of 1059 nm laser after beam combining system at different input powers

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Fig. 8. Beam quality of combined laser at full power

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Fig. 9. Influence of different substrate thicknesses on far field beam pattern of transmitted laser. (a) 3 mm; (b) 10 mm

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Table 1. Comparison of beam quality of sub-beams before and after beam combining system

Table 1. Comparison of beam quality of sub-beams before and after beam combining system

Beam quality at full power		Original value	After beam combining system
Sub-beam 1 （1059 nm）	$M_{x}^{2}$	1.264	1.665
Sub-beam 1 （1059 nm）	$M_{y}^{2}$	1.316	1.506
Sub-beam 2 （1075 nm）	$M_{x}^{2}$	1.383	1.412
Sub-beam 2 （1075 nm）	$M_{y}^{2}$	1.412	1.463
Sub-beam 3 （1090 nm）	$M_{x}^{2}$	1.456	1.740
Sub-beam 3 （1090 nm）	$M_{y}^{2}$	1.539	1.900

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Ye Zheng, Miao He, Xiaoxi Liu, Ziyang Ma, Jianhua Chen, Miao Yu, Siyuan Li, Yi Cao, Junlong Wang, Xuefeng Wang. Experimental Study on High-Power Laser Beam Combining Using Dichroic Mirrors[J]. Laser & Optoelectronics Progress, 2023, 60(15): 1514002

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Paper Information

Category: Lasers and Laser Optics

Received: Jun. 2, 2022

Accepted: Jun. 30, 2022

Published Online: Aug. 11, 2023

The Author Email: Ye Zheng (zhengye.no1@163.com), Junlong Wang (wjl_casc@126.com), Xuefeng Wang (xuefeng_wang@sina.cn)

DOI:10.3788/LOP221900

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology