Share Email Print
cover

Proceedings Paper

Sub-Doppler high-resolution wave-mixing detection method for isotopes in environmental applications
Author(s): Ronald Briggs; Julia Schafer; Wendy Lyons; William G. Tong
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Sub-Doppler laser wave-mixing spectroscopy is presented as a sensitive and high-resolution optical method for measuring isotopes and hyperfine structures. By fingerprinting isotopes at sensitive levels, one can track biohazardous pollutants in various environmental samples since isotope and hyperfine profiles are unique and characteristic of specific locations and sources including those for heavy metal contaminants and chemical runoff. We present an unusually sensitive optical absorption method that offers isotope specificity and resolution at excellent detection sensitivity levels. Sub-Doppler laser wave-mixing spectroscopy is a resonant nonlinear optical technique which uses three intersecting laser beams to produce a signal beam that has all the coherent properties of the original input laser beams. This laser-like signal beam can be efficiently directed, collected, filtered and detected. The use of counter-propagating input beams minimizes Doppler broadening and the resulting sub-Doppler spectral resolution is suitable for isotope and hyperfine splitting measurements. This relatively simple absorption-based method offers better sensitivity and selectivity levels and it requires minimum sample preparation steps.

Paper Details

Date Published: 7 December 2004
PDF: 6 pages
Proc. SPIE 5586, Advanced Environmental, Chemical, and Biological Sensing Technologies II, (7 December 2004); doi: 10.1117/12.571536
Show Author Affiliations
Ronald Briggs, San Diego State Univ. (United States)
Julia Schafer, San Diego State Univ. (United States)
Wendy Lyons, San Diego State Univ. (United States)
William G. Tong, San Diego State Univ. (United States)


Published in SPIE Proceedings Vol. 5586:
Advanced Environmental, Chemical, and Biological Sensing Technologies II
Tuan Vo-Dinh; Gunter Gauglitz; Robert A. Lieberman, Editor(s)

© SPIE. Terms of Use
Back to Top