Open AccessLong-path supercontinuum absorption spectroscopy for measurement of atmospheric constituents
Author(s) -
David M. Brown,
Kebin Shi,
Zhiwen Liu,
C. Russell Philbrick
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.008457
Subject(s) - supercontinuum , differential optical absorption spectroscopy , optics , absorption (acoustics) , collimated light , materials science , water vapor , spectroscopy , modtran , absorption spectroscopy , remote sensing , laser , wavelength , physics , radiative transfer , photonic crystal fiber , meteorology , quantum mechanics , geology
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.