A method for estimating the limiting optical pulse parameters, which can be measured by uncooled bolometers, is proposed. Calculations show that modern microbolometers with a $10~\mu \text{s}$ time constant can provide a response time approximately 10−12 s at the measuring pJ pulse energy with SNR > 500. An algorithm based on analyzing the time dependence of the voltage drop across the resistive element in the cooling period is proposed and described for measuring the average per pulse power of optical radiation with known pulse duration and period equal to several thermal constants of the bolometer. This algorithm has high-accuracy in measuring the pulse power using the low-cost detection system due to the high efficiency and the minimum noise bandwidth of the ADC chip. The results of the experimental studies of the NiTi-bolometer confirmed the model estimates.

中文翻译：

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通过非制冷辐射热计测量短脉冲功率

提出了一种估计可通过非制冷辐射热计测量的限制光脉冲参数的方法。计算表明，具有 $10~\mu\text{s}$ 时间常数的现代微测辐射热计可以在 SNR > 500 的测量 pJ 脉冲能量下提供大约 10-12 秒的响应时间。提出并描述了冷却期间电阻元件两端的电压降，用于测量具有已知脉冲持续时间和周期等于辐射热计的几个热常数的光辐射的平均每脉冲功率。由于ADC芯片的高效率和最小的噪声带宽，该算法在使用低成本检测系统测量脉冲功率时具有高精度。