Thermo-optic detection of quantum cascade laser radiation in the range ∼2.2-2.9THz using a ZnTe crystal

We have investigated the thermo-optical (TO) response of a ZnTe crystal to THz QCL radiation in the frequency range ~2.2-2.9 THz. The TO response was investigated for variations in driving current, QCL polarisation direction and pulse modulation frequency. We show that the anisotropy of the TO coeff...

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Bibliographic Details
Main Authors: Dean, P., Awang, A. H., Alhathlool, R., Kundu, I., Khanna, S. P., Li, L. H., Linfield, E. H., Davies, A. G.
Format: Conference Proceeding
Language:English
Subjects:
Anisotropic magnetoresistance
Crystals
Frequency measurement
Frequency modulation
Quantum cascade lasers
Temperature measurement
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Summary:We have investigated the thermo-optical (TO) response of a ZnTe crystal to THz QCL radiation in the frequency range ~2.2-2.9 THz. The TO response was investigated for variations in driving current, QCL polarisation direction and pulse modulation frequency. We show that the anisotropy of the TO coefficients should be taken into account to correctly describe the experimental response.
ISSN:2162-2027
DOI:10.1109/IRMMW-THz.2012.6380338