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Proceedings Paper

Recent advances in compact broadly tunable external-cavity quantum cascade lasers (ECqcL)
Author(s): Timothy Day; Miles Weida; David Arnone; Michael Pushkarsky
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Paper Abstract

Recent advances in commercially available quantum cascade semiconductor materials providing laser gain in the 3- 12μm regime have been developed. This enables wavelength tunable, narrow linewidth external cavity quantum cascade laser (ECqcL) sources operating above room temperature to be realized with high yield. Daylight has combined these materials with advanced coating and attach technologies, mid-IR micro-optics and telecom-style packaging to yield compact, hermetically-sealed lasers. In addition, ultra-broad tuning ranges (>250 wavenumbers) have been demonstrated from a commercially available product platform. Meanwhile, phase continuous tuning capabilities have been achieved to provide the ability to perform wavelength modulation spectroscopy in the mid-IR from similar commercial platforms. When integrated and optimized with new room temperature mid-IR detectors and modern low power embedded digital signal processing electronics, the resulting sensor platform can provide significant advantages. These include multispecies fingerprint identification at real-time update rates (10 Hz). Daylight will review the most recent progress in ECqcL devices as well as describe their portable, battery-operated Swept SensorTM technology based upon this platform.

Paper Details

Date Published: 28 April 2009
PDF: 7 pages
Proc. SPIE 7319, Next-Generation Spectroscopic Technologies II, 73190F (28 April 2009); doi: 10.1117/12.818978
Show Author Affiliations
Timothy Day, Daylight Solutions, Inc. (United States)
Miles Weida, Daylight Solutions, Inc. (United States)
David Arnone, Daylight Solutions, Inc. (United States)
Michael Pushkarsky, Daylight Solutions, Inc. (United States)

Published in SPIE Proceedings Vol. 7319:
Next-Generation Spectroscopic Technologies II
Mark A. Druy; Christopher D. Brown; Richard A. Crocombe, Editor(s)

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