Abstract
Performance characteristics of a single frequency mid-infrared quantum cascade distributed feedback (QC-DFB) laser will be reported. Sensitive spectroscopic trace gas detection of CH4, N2O, H2O and C2H5OH in the 7.9 μm spectral region was demonstrated using a 100-m Herriott multipass cell and a rapid “zero-air” background subtraction technique.
© 2000 Optical Society of America
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