Research on Adjustment Method of Pulsed Laser Waveform Based on Beam Splitting and Delay

Yuyang Yin; Hui Ye; Xuewu Cheng; Kaijun Ji; Jiqin Wang; Jiaming Liang; Kaijie Ji; Xin Lin; Yong Yang; Linmei Liu; Faquan Li

doi:10.3788/CJL220734

Chinese Journal of Lasers, Volume. 50, Issue 6, 0601004(2023)

Research on Adjustment Method of Pulsed Laser Waveform Based on Beam Splitting and Delay

Yuyang Yin^1,3, Hui Ye^2,3, Xuewu Cheng^1、*, Kaijun Ji^1,3, Jiqin Wang^1,3, Jiaming Liang^1,3, Kaijie Ji¹, Xin Lin¹, Yong Yang¹, Linmei Liu¹, and Faquan Li¹

Author Affiliations

¹State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, Hubei, China

²Shanghai Institution of Satellite Engineering, Shanghai 201109, China

³University of Chinese Academy of Sciences, Beijing 100049, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(9)

Fig. 1. Principle of beam splitting and delay superimposition

Download full size

Fig. 2. Experimental setup

Download full size

Fig. 3. Numerical simulation results of rectangular pulsed laser. (a) Rectangular pulsed lasers under different α; (b) simulated $u$

Download full size

Fig. 4. Numerical simulation results of pulsed laser with special waveform. (a) Rectangular pulsed laser; (b) triangular pulsed laser; (c) hump-shaped pulsed laser; (d) dual-peak pulsed laser

Download full size

Fig. 5. Waveforms stored by oscilloscope

Download full size

Fig. 6. Experimental results. (a) Rectangular pulsed laser; (b) triangular pulsed laser; (c) hump-shaped pulsed laser; (d) dual-peak pulsed laser

Download full size

Fig. 7. Comparison between experimental results and numerical simulation results. (a) Comparison between original pulsed laser waveform and Gaussian waveform; (b) comparison between modified simulation result and experimental result

Download full size

Table 1. Parameters of device used in experiment

View table

Table 1. Parameters of device used in experiment

Device	Parameter
Laser	Wavelength：532 nm Output frequency：30 Hz Full width at half maximum：7 ns Maximum output energy：800 mJ
High-speed photodetector	Response bandwidth：>1.2 GHz Rising edge：<500 ps
Polarizing beam splitter	Polarization extinction ratio：>1000∶1 Transmittance：>90% Damage threshold：2 J/cm² at 532 nm wavelength，10 ns FWHM，and 10 Hz laser output frequency
Oscilloscope	Bandwidth：350 MHz Sampling rate：6.25 GHz Sampling resolution：12

Table 2. Splitting ratio and delay in simulation of laser waveform
View table
Table 2. Splitting ratio and delay in simulation of laser waveform
Waveform Splitting ratio Delay
Beam splitter 1 Beam splitter 2 $α_{1}$ $α_{2}$
Rectangular 50∶50 50∶50 0.69 1.38
Triangular 80∶20 70∶30 0.43 0.80
Hump-shaped 50∶50 50∶50 0.37 1.40
Dual-peak 50∶50 50∶50 0.10 2.50

Tools

Get Citation

Copy Citation Text

Yuyang Yin, Hui Ye, Xuewu Cheng, Kaijun Ji, Jiqin Wang, Jiaming Liang, Kaijie Ji, Xin Lin, Yong Yang, Linmei Liu, Faquan Li. Research on Adjustment Method of Pulsed Laser Waveform Based on Beam Splitting and Delay[J]. Chinese Journal of Lasers, 2023, 50(6): 0601004

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites