Application of Balanced Detection to Absorption Measurements of Trace Gases with Room-Temperature, Quasi-cw Quantum-Cascade Lasers.

@article{Sonnenfroh2001ApplicationOB,
  title={Application of Balanced Detection to Absorption Measurements of Trace Gases with Room-Temperature, Quasi-cw Quantum-Cascade Lasers.},
  author={David Sonnenfroh and Wilson T. Rawlins and Mark G. Allen and Claire Gmachl and Federico Capasso and Albert L. Hutchinson and Deborah L. Sivco and James N. Baillargeon and Alfred Y. Cho},
  journal={Applied optics},
  year={2001},
  volume={40 6},
  pages={812-20}
}
Distributed-feedback quantum-cascade (QC) lasers are expected to form the heart of the next-generation mid-IR laser absorption spectrometers, especially as they are applied to measurements of trace gases in a variety of environments. The incorporation of room-temperature-operable, single-mode QC lasers should result in highly compact and rugged sensors for real-world applications. We report preliminary results on the performance of a laser absorption spectrometer that uses a QC laser operating… CONTINUE READING
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