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Tobias Gensty, Jens von Staden, Wolfgang Elsäßer

Investigations of the Intensity Noise of Quantum Cascade Lasers

Quantum cascade lasers (QCL) represent the youngest generation of semiconductor lasers, which are promising light sources for gas analysis. We investigate their intensity noise properties and find a new scaling behavior as a function of the emitted optical power. We characterize the performance of a QCL in an external-cavity configuration with respect to the application in laser spectroscopy systems. Additionally, we show that modern hollow core fibres represent suitable optical fibers for laser spectroscopy in the mid-infrared spectral range.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 72, 06/2005
Pages: 380 - 387

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