Inversion of input signal energy using FWHM of output waveform

Zhaoxiang Cai; Jun Zhang; Weixian Qian

doi:10.1117/12.2605788

24 November 2021 Inversion of input signal energy using FWHM of output waveform

Zhaoxiang Cai, Jun Zhang, Weixian Qian

Proceedings Volume 12061, AOPC 2021: Infrared Device and Infrared Technology; 1206110 (2021) https://doi.org/10.1117/12.2605788
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

For APD-type four-quadrant pulsed laser detection system, the conventional peak extraction method cannot detect the input laser energy when the output waveform is saturated in the nonlinear region. After investigating the response mechanism of this type of system to the input light intensity, an energy inversion model is proposed to invert the input energy using the half-height width of the output waveform for the saturated waveform in the nonlinear region.The simulation and experimental results verify that this model can perform the energy inversion of the saturated waveform in the nonlinear region well. The experimental data show that the half-height-width energy inversion model can widen the detection range by 8.15 times compared with the traditional peak extraction method, and the maximum absolute error is 0.69 mW, and the corresponding relative error is 2.13%.

Citation Download Citation

Zhaoxiang Cai, Jun Zhang, and Weixian Qian "Inversion of input signal energy using FWHM of output waveform", Proc. SPIE 12061, AOPC 2021: Infrared Device and Infrared Technology, 1206110 (24 November 2021); https://doi.org/10.1117/12.2605788

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