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Chemical sensing with pulsed QC-DFB lasers operating at 15.6 μm

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Abstract.

Pulsed thermoelectrically cooled QC-DFB lasers operating at 15.6 μm were characterized for spectroscopic gas sensing applications. A new method for wavelength scanning based on repetition rate modulation was developed. A non-wavelength-selective pyroelectric detector was incorporated in the sensor configuration giving the advantage of room-temperature operation and low cost. Absorption lines of CO2 and H2O were observed in ambient air, providing information about the concentration of these species.

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Authors and Affiliations

  1. Rice Quantum Institute, Rice University, Houston, TX 77251-1892, USA, , , , , , US

    A.A. Kosterev, R.F. Curl & F.K. Tittel

  2. Physics Institute, University of Neuchâtel, Breguet 1, 2000 Neuchâtel, Switzerland, , , , , , CH

    M. Rochat, M. Beck, D. Hofstetter & J. Faist

Authors
  1. A.A. Kosterev
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  2. R.F. Curl
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  3. F.K. Tittel
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  4. M. Rochat
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  5. M. Beck
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  6. D. Hofstetter
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  7. J. Faist
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Additional information

Received: 29 April 2002 / Published online: 21 August 2002

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ID="*"Corresponding author. Fax: +1-713/348-5686, E-mail: akoster@rice.edu

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Kosterev, A., Curl, R., Tittel, F. et al. Chemical sensing with pulsed QC-DFB lasers operating at 15.6 μm. Appl Phys B 75, 351–357 (2002). https://doi.org/10.1007/s00340-002-0963-z

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  • DOI: https://doi.org/10.1007/s00340-002-0963-z

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