Concentration-modulated absorption spectroscopy

A. J. Langley, R. A. Beaman, J. Baran, A. N. Davies, W. Jeremy Jones

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Concentration modulation is demonstrated to be a technique capable of markedly extending sensitivity limits in absorption spectroscopy. The gain generated relates in such a manner to sample transmittance that for the first reported time direct spectroscopic concentration measurements become possible. When concentration modulation is used with picosecond lasers, state lifetimes can be determined to a limit of ~20 psec.

Original languageEnglish
Pages (from-to)327-329
Number of pages3
JournalOptics Letters
Issue number7
Publication statusPublished - 1 Jan 1985
Externally publishedYes


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