TITLE

# Rapid passage effects in nitrous oxide induced by a chirped external cavity quantum cascade laser

AUTHOR(S)
van Helden, J. H.; Peverall, R.; Ritchie, G. A. D.; Walker, R. J.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
A widely tunable pulsed external cavity quantum cascade laser operating around 8 Î¼m has been used to make rotationally resolved measurements of rapid passage effects in the absorption spectrum of N2O. Rapid passage signals as a function of laser power and N2O pressure are presented. Comparisons are drawn with measurements performed on the same transition with a standard distributed feedback quantum cascade laser. The initial observations on rapid passage effects induced with an external cavity quantum cascade laser show that such high power, widely tunable radiation sources may find applications in both nonlinear optics and optical sensing experiments.
ACCESSION #
36534150

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