IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Terahertz Waves Coming to the Real World
Characterization of Terahertz Imagers Using a Narrowband Time-Domain Terahertz Radiation and Detection System
Sourav ROYKazunori SERITAIwao KAWAYAMAHironaru MURAKAMIYuri AVETISYANMasayoshi TONOUCHI
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2015 Volume E98.C Issue 12 Pages 1128-1130

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Abstract

Up to now, broadband THz time-domain system has been developed and widely used for THz inspection system; however for many THz devices for THz band wireless communication, narrow-band system would be preferred rather than typical broadband system. In this work we established a narrowband and time-domain THz radiation and detection system and characterized uncooled microbolometer-based THz imagers using that system. The central frequency of generated narrowband THz wave was 850 GHz. This system enables simultaneous measurement of pulse energy and waveform of THz pulse using a superconducting transition edge sensor for measuring energy and electro-optic sampling for measuring THz waveform. We used this system to evaluate the performance of uncooled THz imagers; IRV-T0831 and T0832 from NEC. Noise equivalent power (NEP) of approximately 0.22 pW/Hz1/2 was achieved in case of T0832 at less than 1 THz which is lower than NEP value of previous reports.

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© 2015 The Institute of Electronics, Information and Communication Engineers
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