期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 18, 期 13-16, 页码 1415-1417出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2006.877220
关键词
imaging; quantum cascade laser (QCL); real time; terahertz
We report the use of a similar to 50-mW peak power 4.3-THz quantum cascade laser (QCL) as an illumination source for real-time imaging with a 320 x 240 element room-temperature microbolometer focal-plane array detector. The QCL is modulated synchronously with the focal-plane array for differential imaging. Signal-to-noise ratios of similar to 340 are achieved at a 20-frame/s acquisition rate, and the optical noise equivalent power of the detector array at 4.3 THz is estimated to be similar to 320 pW/root Hz. Both reflection and transmission mode imaging are demonstrated.
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