Mode-hop compensation for intracavity sensing via chip voltage in an external-cavity QCL
Abstract
In this paper, we describe a technique to perform intracavity gas sensing by detecting changes in the QCL voltage. The influence of mode-hops is compensated by a data acquisition and processing based on a dual wavelength scanning. This allows to perform gas detection over the full cavity spectral range (1277 cm -1 - 1348 cm -1) without the use of a mode-hop free setup. First results of measurement of the CH4 absorption spectrum are presented.
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Physics [physics]Origin | Files produced by the author(s) |
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