Premium
Measurement of the absolute Raman scattering cross sections of sulfur and the standoff Raman detection of a 6‐mm‐thick sulfur specimen at 1500 m
Author(s) -
Aggarwal R. L.,
Farrar L. W.,
Polla D. L.
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2703
Subject(s) - raman spectroscopy , laser , raman scattering , analytical chemistry (journal) , spectrometer , sulfur , chemistry , materials science , optics , physics , chromatography , organic chemistry
The absolute Raman scattering cross sections (σ RS ) for the 471, 217, and 153 cm −1 modes of sulfur were measured as 6.0 ± 1.2 × 10 −27 , 7.7 ± 1.6 × 10 −27 , and 1.2 ± 0.24 × 10 −26 cm 2 at 815, 799, and 794 nm, respectively, using a 785‐nm pump laser. The corresponding values of σ RS at 1120, 1089, and 1081 nm were determined to be 1.5 ± 0.3 × 10 −27 , 1.2 ± 0.24 × 10 −27 , and 1.2 ± 0.24 × 10 −27 cm 2 using a 1064‐nm laser. A temperature‐controlled, small‐cavity (2.125 mm diameter) blackbody source was used to calibrate the signal output of the Raman spectrometers for these measurements. Standoff Raman detection of a 6‐mm‐thick sulfur specimen located at 1500 m from the pump laser and the Raman spectrometer was made using a 1.4‐W, CW, 785‐nm pump laser. Copyright © 2010 John Wiley & Sons, Ltd.