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Terahertz sideband-tuned quantum cascade laser radiation. | LitMetric
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Terahertz sideband-tuned quantum cascade laser radiation.

Andriy A Danylov Jerry Waldman Thomas M Goyette Andrew J Gatesman Robert H Giles Jin Li William D Goodhue Kurt J Linden William E Nixon

Opt Express

Submillimeter-Wave Technology Laboratory, Dept. of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA.

Published: April 2008

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.

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http://dx.doi.org/10.1364/oe.16.005171DOI Listing

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