Long-path supercontinuum absorption spectroscopy for measurement of atmospheric constituents

David M. Brown, Kebin Shi, Zhiwen Liu, C. Russell Philbrick

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


A supercontinuum source has been proposed as a new tool for measurement of minor species concentrations on long paths through the atmosphere. The present work describes results from recent experiments that demonstrate the potential for Differential Absorption Spectroscopy (DAS) and Spectral Pattern Recognition Differential Absorption Lidar (SPR-DIAL) measurements utilizing a supercontinuum source. As an initial example of this measurement approach, the results include the quantification of water vapor concentration through indoor and outdoor path absorption measurements using a collimated supercontinuum source. Experimental spectra are compared with equivalent simulations from MODTRAN™ versions 4 and 5 to examine the water vapor band between 1300 and 1500 nm to demonstrate the feasibility of the approach.

Original languageEnglish (US)
Pages (from-to)8457-8471
Number of pages15
JournalOptics Express
Issue number12
StatePublished - Jun 9 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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