Sun Qingfeng, Li Dawei, Wang Tao, Zhang Teng, Zhang Tianxiong, Xu Guang. 10 11 High-Dynamic-Range Measurement for Nano-Joule-Level Weak Signal Based on Autocorrelation[J]. Chinese Journal of Lasers, 2020, 47(6): 604001
- Chinese Journal of Lasers
- Vol. 47, Issue 6, 604001 (2020)
Fig. 1. Changes in measurable dynamic range with the energy and power (integral time 0.1 s) of correlation signal. (a) Energy; (b) power
Fig. 2. Phase-matching diagram in autocorrelation process
Fig. 3. Trend of sinc2(ΔkL/2) affecting measurable dynamic range at different phase-matching angles
Fig. 4. Nonlinear process diagram
Fig. 5. Nonlinear process diagram under focusing and filtering
Fig. 6. Optical layout of high-dynamic-range measurement system
Fig. 7. Measurable dynamic range comparison curves under non-focusing and focusing
Fig. 8. Measurable dynamic range curves of different laser source power under focusing
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Table 1. Measurable dynamic ranges at different laser source power
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