Applied Physics B

, Volume 94, Issue 3, pp 369–373

Towards Supercontinuum Cavity Ring-Down Spectroscopy

  • K. Stelmaszczyk
  • M. Fechner
  • P. Rohwetter
  • M. Queißer
  • A. Czyżewski
  • T. Stacewicz
  • L. Wöste
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DOI: 10.1007/s00340-008-3320-z

Cite this article as:
Stelmaszczyk, K., Fechner, M., Rohwetter, P. et al. Appl. Phys. B (2009) 94: 369. doi:10.1007/s00340-008-3320-z

Abstract

We report on measurements performed with the broadband variant of Cavity Ring-Down Spectroscopy based on white-light Supercontinuum. Generated by filaments in a quartz block, the Supercontinuum was coupled into the stable optical cavity characterized by a high Q-factor of 104. The ring-down transients of selectively chosen wavelengths were registered sequentially, revealing a difference of their decay times. The demonstrated high precision of decay time measurement (10−4 relative error) opens the perspective for multiwavelength detection of absorbing species with sub ppb (10−9) sensitivity in the unprecedented broad spectral range of Supercontinuum. This is why we intend to call this technique Supercontinuum Cavity Ring-Down Spectroscopy. Finally, we used the Supercontinuum to quantify variations of the wavelength-dependent reflection coefficient of cavity mirrors; as we show, with an absolute accuracy of 10−6.

PACS

42.65.Jx42.62.Fi07.88.+y07.57.-c

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • K. Stelmaszczyk
    • 1
  • M. Fechner
    • 1
  • P. Rohwetter
    • 1
  • M. Queißer
    • 1
  • A. Czyżewski
    • 2
  • T. Stacewicz
    • 3
  • L. Wöste
    • 1
  1. 1.Institute of Experimental PhysicsFree University of BerlinBerlinGermany
  2. 2.Institute of Applied OpticsWarsawPoland
  3. 3.Institute of Experimental PhysicsWarsaw UniversityWarsawPoland