Journal article
Harmonic detection with tunable diode lasers —two-tone modulation
Abstract
The minimum absorption detectable by a tunable diode laser spectrometer utilising harmonic techniques is often limited by interference fringes generated by scattered light. The sensitivity of the spectrometer to absorption can be increased by applying a jitter modulation. In this paper, the theory of harmonic response for single- and two-tone modulation over optical fringes and Lorentzian absorption lines is developed and compared to …
Authors
Cassidy DT; Reid J
Journal
Applied Physics B, Vol. 29, No. 4, pp. 279–285
Publisher
Springer Nature
Publication Date
December 1982
DOI
10.1007/bf00689188
ISSN
0946-2171