Applied Physics B

, Volume 75, Issue 6–7, pp 745–750

Cavity-enhanced absorption spectroscopy with a rapidly swept diode laser

  • B. Bakowski
  • L. Corner
  • G. Hancock
  • R. Kotchie
  • R. Peverall
  • G.A.D. Ritchie

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 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • B. Bakowski
    • 1
  • L. Corner
    • 1
  • G. Hancock
    • 1
  • R. Kotchie
    • 1
  • R. Peverall
    • 1
  • G.A.D. Ritchie
    • 1
  1. 1.Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UKGB

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