Collection Of theses on high power laser and plasma physics, 2016, 14 (1): 0904001, Published Online: Mar. 22, 2017
Measurement Technique of Signal Noise Ratio Based on Resonator Oscillation for Femtosecond Single-Shot Pulse
测量 飞秒激光 单次脉冲 信噪比测量 互相关仪 谐振腔振荡 measurement femtosecond laser single-shot pulse signal noise ratio cross-correlator resonator oscillation
Abstract
A measurement technique of signal noise ratio based on resonator oscillation for single-shot pulse is proposed. Through precise setting of the resonant cavity length, optical path difference between two resonant cavities, and the reflectivity or transmittance of the high reflectivity mirror, the three key indicators of high dynamic range, large time window and high temporal resolution are easily realized. Meanwhile, high fidelity of measurement signal is guaranteed using full aperture beam measurement. Theoretically, various kinds of function and stability of the resonator structure are analyzed. Influence of errors introduced by dispersion on results are also analyzed. High reflectivity mirrors with wedge-shape are introduced in the resonator cavity to avoid the noise of minor pulses. In theory, the measurement of high signal noise ratio (1010) ,even higher signal noise ratio, and high temporal resolution of hundred femtosecond can be realized in this construction.
Shi Shuaixu, Yang Qingwei, Ouyang Xiaoping, Xia Suqiu, Zhu Jianqiang. Measurement Technique of Signal Noise Ratio Based on Resonator Oscillation for Femtosecond Single-Shot Pulse[J]. Collection Of theses on high power laser and plasma physics, 2016, 14(1): 0904001.