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In the last few years, many advances have been made in the demonstration ofhigh-average power pulsed THz sources; however, little effort has been made tostudy compatible sensitive field-resolved detectors. Here, we investigateErAs:InAlGaAs photoconductive receivers optimized for a probe wavelength of1030 nm and thus suitable for the new class of high-power ultrafastYtterbium-based laser sources for THz generation and detection. The performanceof the receiver is tested with a few-cycle THz source with high average powerup to 20 mW and the dynamic range and saturation behavior of the receiver isthoroughly characterized. Under optimized settings, a dynamic range of morethan 115 dB is reached in a 120 s measurement time with 20 mW of THz averagepower, which is among the highest reported values to date. By reviewing thestate-of-the art in TDS measurement and post-processing technology, we identifycurrent limitations and guidelines for further increasing the dynamic rangetowards 150 dB in short measurement times using high average power THz systems.

Photoconductive receivers at 1030 nm for high average power pulsed THz detection