We report on fast terahertz detectors based on antenna-coupled BiSb/Sb thermoelements operating at room temperature. A response time of the thermocouples as low as 22 μs and a noise equivalent power of at 1 kHz modulation frequency is measured in air at room temperature. The integration capability of these mass producible devices enables large-scale detector arrays for real-time terahertz imaging applications. Due to the fast response time, multiplexing of the detectors can be used to reduce the required readout circuits.
Uncooled antenna-coupled terahertz detectors with 22 μs response time based on BiSb/Sb thermocouples
Anna K. Huhn, Gunnar Spickermann, Andreas Ihring, Uwe Schinkel, Hans-Georg Meyer, Peter Haring Bolívar; Uncooled antenna-coupled terahertz detectors with 22 μs response time based on BiSb/Sb thermocouples. Appl. Phys. Lett. 25 March 2013; 102 (12): 121102. https://doi.org/10.1063/1.4798369
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