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28 April 2009 Recent advances in compact broadly tunable external-cavity quantum cascade lasers (ECqcL)
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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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Timothy Day, Miles Weida, David Arnone, and Michael Pushkarsky "Recent advances in compact broadly tunable external-cavity quantum cascade lasers (ECqcL)", Proc. SPIE 7319, Next-Generation Spectroscopic Technologies II, 73190F (28 April 2009);


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