Widely tunable mode-hop free external cavity quantum cascade laser for high resolution spectroscopic applications |
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| Authors: | G Wysocki RF Curl FK Tittel R Maulini JM Bulliard J Faist |
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| Institution: | (1) Rice Quantum Institute, Rice University, 6100 Main St., Houston, TX 77005, USA;(2) Institute of Physics, University of Neuchatel, 1 A.-L. Breguet, 2000 Neuchatel, Switzerland |
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| Abstract: | An external cavity (EC) quantum cascade laser (QCL) configuration with the thermoelectrically cooled gain medium fabricated
using a bound-to-continuum design and operating in continuous wave at ∼5.2 μm is reported. The EC architecture employs a piezo-activated
cavity mode tracking system for mode-hop free operation suitable for high resolution spectroscopic applications and multiple
species trace-gas detection. The performance of the EC-QCL exhibits coarse single mode tuning over 35 cm-1 and a continuous mode-hop free fine tuning range of ∼1.2 cm-1.
PACS 07.07.Df; 42.55.Px; 42.62.Fi; 42.60.Fc |
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