Jianying Ren, Huayan Sun, Yanzhong Zhao, Laixian Zhang. Effect of Intensity Disturbance on Performance of Dual-Frequency Laser Coherent Detection[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031407
- Laser & Optoelectronics Progress
- Vol. 57, Issue 3, 031407 (2020)
Fig. 1. Principle diagram of dual-frequency laser coherent detection technology
Fig. 2. Power spectrum distributions when τd<τc. (a) Power spectrum distribution for signal with different line widths; (b) power spectrum distribution for signal with different disturbance frequencies
Fig. 3. Power spectrum distributions when τd?τc. (a) Power spectrum distributions for different line widths; (b) power spectrum distributions under different disturbance frequencies
Fig. 4. SNR curves. (a) SNR versus line width of beat frequency; (b) SNR versus noise disturbance frequency
Fig. 5. Beat signal and local oscillation signal obtained by experiment. (a)Beat signal (top) and reference signal(bottom); (b) mixing output signal
Fig. 6. Power spectra of beat signal and mixing output signal. (a) Power spectrum of beat frequency signal; (b) power spectra of mixing output signal
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