Self-mixing imaging using a terahertz quantum cascade amplifier

Wallis, Robert and Ren, Yuan and Jessop, David S. and Degl'Innocenti, Riccardo and Klimont, Adam and Beere, Harvey E. and Ritchie, David A. (2015) Self-mixing imaging using a terahertz quantum cascade amplifier. In: IRMMW-THz 2015 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves. Institute of Electrical and Electronics Engineers Inc., CHN. ISBN 9781479982721

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We demonstrate a terahertz imaging system utilizing self-mixing in a 2.9 THz quantum cascade amplifier, through the use of an anti-reflection coated silicon lens to completely suppress lasing action. The fully exploited optical gain of the quantum cascade amplifier allows induced voltage perturbations to be spatially mapped with a signal to noise ratio of up to 55 dB and an acquisition rate of up to 20,000 pixels per second.

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10 Jan 2018 14:58
Last Modified:
16 Sep 2023 03:12