Time constant extraction from noisy cavity ring-down signals

Tuomo von Lerber, Markus W. Sigrist

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


A new efficient algorithm for the extraction of time constants from exponentially decaying signals is presented. The method is based on a non-linear Newton fitting and it is demonstrated to yield significantly more accurate results than the commonly used weighted least square method under noisy signal conditions. Methods are compared by simulated and true experimental data obtained by a fiber cavity ring-down setup.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalChemical Physics Letters
Issue number1-2
Publication statusPublished - 13 Feb 2002
Externally publishedYes


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