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New ultrashort pulsewidth measurement technology based on interference jitter and FPGA platform
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作者 Jin Li Yanbo Dou +6 位作者 Lixin Wang Jinhai Zou Yu Ding Hang Wang Qiujun Ruan Zhipeng Dong Zhengqian Luo 《Chinese Optics Letters》 SCIE EI CAS CSCD 2022年第3期46-51,共6页
Conventional ultrashort pulsewidth measurement technology is autocorrelation based on second-harmonic generation;however,nonlinear crystals and bulky components are required,which usually leads to the limited waveleng... Conventional ultrashort pulsewidth measurement technology is autocorrelation based on second-harmonic generation;however,nonlinear crystals and bulky components are required,which usually leads to the limited wavelength range and the difficult adjustment with free-space light alignment.Here,we proposed a compact all-fiber pulsewidth measurement technology based on the interference jitter(IJ)and field-programmable gate array(FPGA)platform,without requiring a nonlinear optical device(e.g.nonlinear crystal/detector).Such a technology shows a wide measurement waveband from 1 to 2.15μm at least,a pulsewidth range from femtoseconds to 100 ps,and a small relative error of 0.15%-3.8%.In particular,a minimum pulse energy of 219 fj is experimentally detected with an average-power-peak-power product of 1.065×10^(-6)W^(2).The IJ-FPGA technology may offer a new route for miniaturized,user-friendly,and broadband pulsewidth measurement. 展开更多
关键词 pulse width measurement interference jitter FPGA platform optical device
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