High‐Repetition‐Frequency Miniaturized Lightweight 532 nm Laser for Space Applications

Chao Sheng; Xi Chen; Mingjian Wang; Jiqiao Liu; Zhenzhen Yu; Xia Hou; Weibiao Chen

doi:10.3788/CJL240962

Chinese Journal of Lasers, Volume. 52, Issue 1, 0101002(2025)

High‐Repetition‐Frequency Miniaturized Lightweight 532 nm Laser for Space Applications

Chao Sheng^1,2, Xi Chen¹, Mingjian Wang^1、*, Jiqiao Liu¹, Zhenzhen Yu¹, Xia Hou¹, and Weibiao Chen¹

¹Key Laboratory of Space Laser Communication and Detection Technology,Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

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Figures & Tables(13)

Fig. 1. Structural diagram of laser

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Fig. 2. Physical diagram of laser

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Fig. 3. Pump shaping spot

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Fig. 4. Output average power of fundamental light versus LD pump power

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Fig. 5. Waveform diagrams of laser pulse. (a) 1064 nm fundamental frequency light; (b) 532 nm frequency-doubled light

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Fig. 6. Stability of output laser pulse

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Fig. 7. Output laser wavelength

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Fig. 8. Wavelength stability of output laser

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Fig. 9. Beam quality of laser

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Fig. 10. Mass of laser head

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Fig. 11. Electronic modules of laser. (a) Circuit board of drive and temperature control in LD; (b) circuit board of energy-storage capacitor

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Table 1. Parameter values
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Table 1. Parameter values
Parameter Value Parameter Value
σ /cm² 2.8 $\times$ 10^-19 L 0.05
σ_gs /cm² 7.8 $\times$ 10^-18 τ /μs 230
σ_es /cm² 2.3 $\times$ 10^-18 $γ$ 1
l /mm 6 ℎν /J&#x1d43d; $1.86 \times$ 10^-19
l′ /mm 18 c /（m∙s^-1） 3 $\times$ 10⁸
R 0.6 A /cm² 3.25 $\times$ 10^-3
T₀ 0.5

Table 2. Parameter values of laser

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Table 2. Parameter values of laser

Parameter	Before environmental testing	After environmental testing
Wavelength /nm	532.26	532.26
Energy /mJ	0.24	0.23
Pulse width /ns	1.17	1.13
Beam quality	$M_{x}^{2} = 1.43, M_{y}^{2} = 1.46$	$M_{x}^{2} = 1.44, M_{y}^{2} = 1.48$
Leak rate /［Pa/（m³·s）］	9.8×10^-10	9.5×10^-10

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Chao Sheng, Xi Chen, Mingjian Wang, Jiqiao Liu, Zhenzhen Yu, Xia Hou, Weibiao Chen. High‐Repetition‐Frequency Miniaturized Lightweight 532 nm Laser for Space Applications[J]. Chinese Journal of Lasers, 2025, 52(1): 0101002

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