Cavity ringdown spectroscopic detection of nitric oxide with a continuous-wave quantum-cascade laser.

@article{Kosterev2001CavityRS,
  title={Cavity ringdown spectroscopic detection of nitric oxide with a continuous-wave quantum-cascade laser.},
  author={Anatoliy Kosterev and Alexander L. Malinovsky and Frank K. Tittel and Claire Gmachl and Federico Capasso and Deborah L. Sivco and James N. Baillargeon and Albert L. Hutchinson and Alfred Y. Cho},
  journal={Applied optics},
  year={2001},
  volume={40 30},
  pages={5522-9}
}
A spectroscopic gas sensor for nitric oxide (NO) detection based on a cavity ringdown technique was designed and evaluated. A cw quantum-cascade distributed-feedback laser operating at 5.2 mum was used as a tunable single-frequency light source. Both laser-frequency tuning and abrupt interruptions of the laser radiation were performed through manipulation of the laser current. A single ringdown event sensitivity to absorption of 2.2 x 10(-8) cm(-1) was achieved. Measurements of parts per… CONTINUE READING
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