Theoretical investigation on the intracavity Doppler effect in continuous wave swept-cavity ringdown spectroscopy

J. Y. Lee, J. W. Hahn

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We theoretically investigate the spectral measurement errors that are apt to occur in continuous wave (CW) cavity ringdown (CRD) techniques suffering intracavity Doppler shifts. In the typical CW CRD scheme based on a cavity sweep operation for the resonant coupling of a probe laser into a ringdown cavity, the intracavity probe light detunes gradually over time, carrying time-dependent loss information of an absorption feature. Frequency-drifting ringdown signals are theoretically modelled and found to result in erroneous absorption spectra that exhibit the frequency shift of absorption profiles as well as linewidth broadening.

Original languageEnglish
Pages (from-to)371-378
Number of pages8
JournalApplied Physics B: Lasers and Optics
Volume79
Issue number3
DOIs
Publication statusPublished - 2004 Aug

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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