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Proceedings Paper

Sensitive sub-Doppler nonlinear spectroscopy for hyperfine-structure analysis using simple atomizers
Author(s): Fritz K. Mickadeit; Helen Kemp; Julia Schafer; William M. Tong
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Paper Abstract

Laser wave-mixing spectroscopy is presented as a sub-Doppler method that offers not only high spectral resolution, but also excellent detection sensitivity. It offers spectral resolution suitable for hyperfine structure analysis and isotope ratio measurements. In a non-planar backward- scattering four-wave mixing optical configuration, two of the three input beams counter propagate and the Doppler broadening is minimized, and hence, spectral resolution is enhanced. Since the signal is a coherent beam, optical collection is efficient and signal detection is convenient. This simple multi-photon nonlinear laser method offers un usually sensitive detection limits that are suitable for trace-concentration isotope analysis using a few different types of simple analytical atomizers. Reliable measurement of hyperfine structures allows effective determination of isotope ratios for chemical analysis.

Paper Details

Date Published: 15 May 1998
PDF: 6 pages
Proc. SPIE 3270, Methods for Ultrasensitive Detection, (15 May 1998); doi: 10.1117/12.308375
Show Author Affiliations
Fritz K. Mickadeit, San Diego State Univ. (United States)
Helen Kemp, San Diego State Univ. (United States)
Julia Schafer, San Diego State Univ. (United States)
William M. Tong, San Diego State Univ. (United States)


Published in SPIE Proceedings Vol. 3270:
Methods for Ultrasensitive Detection
Bryan L. Fearey, Editor(s)

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