Articles | Volume 16, issue 5
Research article
14 Mar 2023
Research article |  | 14 Mar 2023

New methods for the calibration of optical resonators: integrated calibration by means of optical modulation (ICOM) and narrow-band cavity ring-down (NB-CRD)

Henning Finkenzeller, Denis Pöhler, Martin Horbanski, Johannes Lampel, and Ulrich Platt

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Cited articles

Ball, S. M. and Jones, R.: Broad-Band Cavity Ring-Down Spectroscopy, Chem. Rev., 103, 5239–5262, 2003. a, b
Berden, G. and Engeln, R.: Cavity ring-down spectroscopy: techniques and applications, John Wiley & Sons, ISBN 978-1-4051-7688-0, 323 pp., 2009. a
Bodhaine, B. A., Wood, N. B., Dutton, E. G., and Slusser, J. R.: On Rayleigh optical depth calculations, J. Atmos. Ocean. Technol., 16, 1854–1861, 1999. a
Engeln, R., von Helden, G., Berden, G., and Meijer, G.: Phase shift cavity ring down absorption spectroscopy, Chem. Phys. Lett., 262, 105–109,, 1996. a
Fiedler, S. E., Hese, A., and Ruth, A. A.: Incoherent broad-band cavity-enhanced absorption spectroscopy, Chem. Phys. Lett., 371, 284–294,, 2003. a
Short summary
Optical resonators enhance the light path in compact instruments, thereby improving their sensitivity. Determining the established path length in the instrument is a prerequisite for the accurate determination of trace gas concentrations but can be a significant complication in the use of such resonators. Here we show two calibration techniques which are relatively simple and free of consumables but still provide accurate calibrations. This facilitates the use of optical resonators.