Design and realization of final value prediction circuit of laser high power detector

Qian Xie; Zungui Ke; Zili Ren; Wenzhi Qin; Xu Pan; Guoling Luo; Ruiyu Yang; Qingmin Chen

doi:10.1117/12.3006752

26 September 2023 Design and realization of final value prediction circuit of laser high power detector

Qian Xie, Zungui Ke, Zili Ren, Wenzhi Qin, Xu Pan, Guoling Luo, Ruiyu Yang, Qingmin Chen

Proceedings Volume 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023); 127931O (2023) https://doi.org/10.1117/12.3006752
Event: International Conference on Mechatronics and Intelligent Control (ICMIC2023), 2023, Wuhan, China

Abstract

Using the frequency domain analysis method, the thermocouple time constant in the dynamic measurement of laser power is analyzed, and the pole of the thermocouple is compensated by the frequency domain analysis method, thus expanding the frequency domain range of the measurement system. On this basis, by measuring the response curve of the power detector, its time constant is determined, and its transfer function is obtained by designing a predictive circuit. The designed prediction circuit is simulated, and the optimal design parameters are obtained, which doubles the frequency response and reduces the response time constant to the step function from T to T/2. Through the test of the actual circuit, the results are basically consistent with the theoretical calculation results, which can meet the rapid detection needs of high-power detectors.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qian Xie, Zungui Ke, Zili Ren, Wenzhi Qin, Xu Pan, Guoling Luo, Ruiyu Yang, and Qingmin Chen "Design and realization of final value prediction circuit of laser high power detector", Proc. SPIE 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023), 127931O (26 September 2023); https://doi.org/10.1117/12.3006752

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KEYWORDS

Sensors

Frequency response

Design and modelling

High power lasers

Laser energy

Integrating spheres

Light absorption

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