Terahertz sideband-tuned quantum cascade laser radiation
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Updated: Jul 4, 2026
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Published on: December 18, 2015
Andriy A Danylov1, Jerry Waldman, Thomas M Goyette
1Submillimeter-Wave Technology Laboratory, Dept. of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA. Andriy_Danylov@student.uml.edu
Abstract:
A compact, tunable, narrowband terahertz source was demonstrated by mixing a single longitudinal mode 2.408 THz, free running quantum cascade laser with a 2-20 GHz microwave sweeper in a conventional corner-cube-mounted Schottky diode. The sideband spectra were characterized with a Fourier transform spectrometer, and the radiation was tuned through several D(2)O rotational transitions to estimate the longer term (t > or = several sec) bandwidth of the source. A spectral resolution of 2 MHz in CW regime was observed.
