Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Danylov et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: