Spectral beam combination technology of high-power laser

材料特性	参数
密度/ kg·m⁻³	2 200
吸收系数/ m⁻¹	141
热导率/ W·m⁻¹·K⁻¹	1.4
比热容/ J·kg⁻¹·K⁻¹	752
热膨胀系数/ K⁻¹	5.8×10⁻⁷
杨氏模量/ GPa	73.1
泊松比	0.17
熔点/ K	1 750
拉应力/ MPa	500
压应力/ MPa	3 000

Table 2. Simulation results of thermal analysis and deformations of dichroic mirror
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Table 2. Simulation results of thermal analysis and deformations of dichroic mirror
单束激光功率/ W 最高温度/(°) 最低温度/(°) 元件形变量RMS/m
500 20.898 20.308 1.5×10⁻¹⁰
10 000 38.734 26.867 2.9×10⁻⁹

Table 3. Simulation results of laser spot parameters of beam combination laser in far field
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Table 3. Simulation results of laser spot parameters of beam combination laser in far field
距离L/m 300 500 1 000 3 000
$d_{c}$ /mm $δ$ =0 54.7 91.7 183.4 550.0
$δ$ =10 μrad 55.3 92.1 186.0 557.2
$θ_{c}$ /mrad $δ$ =0 0.183 0.183 0.183 0.183
$δ$ =10 μrad 0.184 0.184 0.184 0.184

Table 4. Test results of beam combination efficiency between 1 070 nm and 1 090 nm continuous laser
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Table 4. Test results of beam combination efficiency between 1 070 nm and 1 090 nm continuous laser
序号 1 070 nm激光功率/W 1 090 nm激光功率/W 合束后功率/W 合束效率/%
1 499.8 501.1 954.8 95.4
2 499.8 501.1 952.6 95.2
3 499.8 501.1 956.1 95.6

Table 5. Test results of beam combination efficiency between 1 064 nm pulse laser and 1 090 nm continuous laser

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Table 5. Test results of beam combination efficiency between 1 064 nm pulse laser and 1 090 nm continuous laser

序号	合束前		合束后		合束效率/%
序号	1 064 nm脉冲能量/mJ	1 090 nm连续功率/W	1 064 nm脉冲能量/mJ	1 090 nm连续功率/W	1 064 nm脉冲	1 090 nm连续
1	400.2	500.6	389.6	474.6	97.3	94.8
2	400.2	500.6	387.4	476.8	96.8	95.2
3	400.2	500.6	390.1	475.2	97.5	94.9

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Rangxiu MU, Jia ZHANG, Jingyu LONG, Gang LI, Yinghua BU, Yaofeng HAN, Shaojun SHOU. Spectral beam combination technology of high-power laser[J]. Journal of Applied Optics, 2022, 43(4): 792

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Paper Information

Category: LASER TECHNOLOGY

Received: May. 16, 2022

Accepted: --

Published Online: Aug. 10, 2022

The Author Email:

DOI:10.5768/JAO202243.0407001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Thermodynamic parameters of SiO2

Table 1. Thermodynamic parameters of SiO2

Table 2. Simulation results of thermal analysis and deformations of dichroic mirror

Table 2. Simulation results of thermal analysis and deformations of dichroic mirror

Table 3. Simulation results of laser spot parameters of beam combination laser in far field

Table 3. Simulation results of laser spot parameters of beam combination laser in far field

Table 4. Test results of beam combination efficiency between 1 070 nm and 1 090 nm continuous laser

Table 4. Test results of beam combination efficiency between 1 070 nm and 1 090 nm continuous laser

Table 5. Test results of beam combination efficiency between 1 064 nm pulse laser and 1 090 nm continuous laser

Table 5. Test results of beam combination efficiency between 1 064 nm pulse laser and 1 090 nm continuous laser

Table 1. Thermodynamic parameters of SiO₂

Table 1. Thermodynamic parameters of SiO₂