Discrete Path Nd∶YAG Innoslab Laser Amplifier Operating at 2 kHz Repetition Rate

Yilan Chen; Jiqiao Liu; Mingjian Wang; Xiao Chen; Xiaolei Zhu

doi:10.3788/LOP223183

Laser & Optoelectronics Progress, Volume. 61, Issue 9, 0914011(2024)

Discrete Path Nd∶YAG Innoslab Laser Amplifier Operating at 2 kHz Repetition Rate

Yilan Chen^1,2, Jiqiao Liu^2,3、*, Mingjian Wang³, Xiao Chen³, and Xiaolei Zhu^1,2

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

²Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³Laboratory of Space Laser Engineering, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

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Figures & Tables(8)

Fig. 1. Structure diagram of Nd∶YAG Innoslab laser amplifier system

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Fig. 2. Beam profile of pump line in Nd∶YAG crystal

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Fig. 3. Amplified output power and extraction efficiency versus absorbed pump power of Nd∶YAG Innoslab laser amplifier with 2.7 W seed power

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Fig. 4. Power of parasitic lasing versus absorbed pump power without seed laser injection (Inset: intensity distribution of parasitic lasing beam)

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Fig. 5. Time pulse waveforms of (a) seed laser and (b) amplified pulse

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Fig. 6. Waveform of single laser pulse with self-lasing

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Fig. 7. Beam quality comparison of Nd∶YAG Innoslab laser amplifier system. (a) M² of seed laser; (b) M² when amplified power is 13 W (Inset: intensity distribution of far-field beam)

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Table 1. Parameters in theoretical simulation
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Table 1. Parameters in theoretical simulation
Parameter Value
σ 2.8×10^-19［18］ cm²
α 0.04 cm^-1
η_q 1^［19］
η_s 0.76^［19］
η_b 0.7
V 1.2 cm×1 cm×0.04 cm

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Yilan Chen, Jiqiao Liu, Mingjian Wang, Xiao Chen, Xiaolei Zhu. Discrete Path Nd∶YAG Innoslab Laser Amplifier Operating at 2 kHz Repetition Rate[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0914011

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