Fundamental Noise Characteristics of Chirped Laser Dispersion Spectroscopy

Genevieve Plant, Andreas Hangauer, Gerard Wysocki

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Analysis of the fundamental noise characteristics of chirped laser dispersion spectroscopy (CLaDS) is reported. The noise performance of CLaDS under shot noise conditions is investigated and the results are compared to that of direct laser absorption spectroscopy (DLAS). For single spectral point detection, the CLaDS detection limit is a factor of 6 higher than that of DLAS. In the case of full spectral fitting with accurate representation of the noise characteristics and the less complex baseline correction in CLaDS, both techniques show comparable fundamental limit of performance in trace-chemical detection.

Original languageEnglish (US)
Article number7582393
Pages (from-to)147-156
Number of pages10
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
StatePublished - Mar 1 2017

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • Dispersion
  • infrared sensors
  • least squares methods
  • spectroscopy


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