Single-mode, tunable quantum cascade distributed feedback (QC-DFB) lasers between 4.6 and 10 /spl mu/m wavelength

C Gmachl,A.Y Cho,F Capasso,D.L Sivco,J.N Baillargeon,A.L Hutchinson,R Kohler,A Tredicucci

doi:10.1109/cleo.2000.906992

Single-mode, tunable quantum cascade distributed feedback (QC-DFB) lasers between 4.6 and 10 /spl mu/m wavelength

C Gmachl, A.Y Cho + Show 6 more

https://doi.org/10.1109/cleo.2000.906992

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Publication Date: Jan 1, 2000

Citations: 1

#Quantum Cascade Distributed Feedback Lasers #Quantum Cascade Distributed Feedback + Show 8 more

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Abstract

Summary form only given.Two types of single-mode, continuously tunable QC-DFB lasers are being used for gas sensing applications. First, QC-DFB lasers emitting at or close to room temperature under pulsed conditions are of importance for portable sensor systems avoiding the use of cryo-liquids or heavy cryo-coolers. Secondly, high resolution spectroscopy requires a narrow laser linewidth, only achievable under continuous wave (cw) operation. These lasers are typically operated around liquid nitrogen temperature. We demonstrate the first short wavelength (4.6-4.7 /spl mu/m) QC-DFB lasers, targeted to the detection of CO.

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