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arxiv: Physics::Optics, Physics::Instrumentation and Detectors
Practical supra-terahertz (1–5 THz) heterodyne radiometry systems require compact local oscillator and mixer components, which are suitable for robust waveguide integration. We demonstrate detection of radiation emitted by quantum cascade lasers at frequencies between 2.2 and 3.5 THz using room-temperature quasi-optically mounted planar Schottky diodes. These diodes are more readily integrated into waveguides than point-contact diodes, do not require the cryogenic environment of hot-electron bolometers and offer potentially better noise performance than superlattice devices.
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    • [1] H.-W. Hubers, M.F. Kimmitt, N. Hiromoto, and Erik Brundermann. Terahertz Spectroscopy: System and Sensitivity Considerations. IEEE Trans. THz Sci. Technol., 1(1):321-331, September 2011.
    • [2] S. P. Rea, B. N. Ellison, Bruce M. Swinyard, A Valavanis, Y J Han, E H Linfield, A G Davies, C Saunders, S Parkes, Daniel Gerber, M Henry, H Wang, B Alderman, O Auriacombe, T Rawlings, M Crooke, and T Bradshaw. The Low-Cost Upper-Atmosphere Sounder (LOCUS). In 26th international symposium on space terahertz technology, Cambridge, MA, March 2015.
    • [3] G. Beig, P. Keckhut, R. P. Lowe, R. G. Roble, M. G. Mlynczak, J. Scheer, V. I. Fomichev, D. Offermann, W. J. R. French, M. G. Shepherd, A. I. Semenov, E. E. Remsberg, C. Y. She, F. J. Lu¨bken, J. Bremer, B. R. Clemesha, J. Stegman, F. Sigernes, and S. Fadnavis. Review of mesospheric temperature trends. Rev. Geophys., 41(4):1015, December 2003.
    • [4] A. Baryshev, J. N. Hovenier, A. J. L. Adam, I. Kasˇalynas, J. R. Gao, T. O. Klaassen, B. S. Williams, S. Kumar, Q. Hu, and J. L. Reno. Phase locking and spectral linewidth of a two-mode terahertz quantum cascade laser. Appl. Phys. Lett., 89(3):031115-031115-3, July 2006.
    • [5] D. J. Hayton, A. Khudchencko, D. G. Pavelyev, J. N. Hovenier, A. Baryshev, J. R. Gao, T. Y. Kao, Q. Hu, J. L. Reno, and V. Vaks. Phase locking of a 3.4 THz third-order distributed feedback quantum cascade laser using a room-temperature superlattice
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