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High speed external cavity diode laser concept based on a resonantly driven MEMS scanner for the mid-infrared region

Morten Hoppe, Sebastian Schmidtmann, Christian Aßmann, Martin Honsberg, Tobias Milde, Thomas Schanze, Joachim R. Sacher, Shanshan Gu-Stoppel, and Frank Senger

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Abstract

The rapid detection of trace gases is of great relevance for various spectroscopy applications. In this regard, the technology of external cavity diode lasers (ECDLs) has firmly established itself due to its excellent properties. Outside of the laboratory environment, however, these still have some restrictions, especially with regard to high acquisition rates for sensitive spectroscopy applications and mode-hop-free tuning. In this article, we present our innovative GaSb-based ECDL concept, in which a resonantly driven microelectromechanical system actuator is used. With this, a defined frequency range can be tuned extremely fast and without mode hops. Results of the characterization and its use for the rapid detection of trace gases are presented.

© 2021 Optical Society of America

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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