Applied Physics B

, Volume 75, Issue 6, pp 745–750

Cavity-enhanced absorption spectroscopy with a rapidly swept diode laser

Authors

  • B. Bakowski
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
  • L. Corner
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
  • G. Hancock
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
  • R. Kotchie
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
  • R. Peverall
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
  • G.A.D. Ritchie
    • Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK

DOI: 10.1007/s00340-002-1026-1

Cite this article as:
Bakowski, B., Corner, L., Hancock, G. et al. Appl Phys B (2002) 75: 745. doi:10.1007/s00340-002-1026-1

Abstract.

Cavity-enhanced absorption spectroscopy is explained in terms of the transmission function of a rapidly swept interferometer, and the integrated transmission is shown to be proportional to the cavity ringdown time. The technique is demonstrated on the b1Σg+-X3Σg-  (1,0) band in molecular oxygen at 687 nm using a tunable diode laser and a relative-ly high-Q optical cavity (finesse ≈4000). A detection limit of 3×10-8 cm-1 s1/2 is achieved for a 0.8 cm-1 scanning range.

PACS: 42.55.Px; 42.62.Fi; 42.68.Ca

Copyright information

© Springer-Verlag 2002