Two-dimensional spatial imaging based on acoustooptical deflectors

Two acoustooptical deflectors placed orthogonal to each other allow the scanning of a laser beam in two dimensions without mechanical movement. A complete scan is possible in 50 micros, providing a spatial resolution of 20 x 125 spots. This is used to follow the development of plumes generated by la...

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Bibliographic Details
Published in:Applied optics (2004) 1987-09, Vol.26 (17), p.3536-3541
Main Authors: Yappert, M C, Kimbrell, S M, Yeung, E S
Format: Article
Language:English
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Summary:Two acoustooptical deflectors placed orthogonal to each other allow the scanning of a laser beam in two dimensions without mechanical movement. A complete scan is possible in 50 micros, providing a spatial resolution of 20 x 125 spots. This is used to follow the development of plumes generated by laser vaporization from a surface. Both Na atoms and Pb(2) dimers can be monitored by absorption over the lifetime of the plume. The use of a second channel in the transient digitizer allows normalization to correct for variations in laser intensity and deflection efficiencies during the scan. Concentration maps for each can thus be obtained.
ISSN:1559-128X
DOI:10.1364/AO.26.003536