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Two-photon-resonant four-wave-mixing spectroscopy of atomic hydrogen in flames

✍ Scribed by Jeffrey A. Gray; Rick Trebino

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
539 KB
Volume
216
Category
Article
ISSN
0009-2614

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✦ Synopsis

We report a new diagnostic technique based on resonant four-wave-mixing spectroscopy of the two-photon ls-+2s transition in atomic hydrogen. Observations including Doppler-free spectral lineshapes and saturation behavior are related to models for the nonlinear optical processes. Two-photon wave-mixing measurements of atomic hydrogen concentration in laboratory flames at pressures of 30-760 Torr appear to be less susceptible to errors from collisional quenching than similar measurements made using laser-induced fluorescence.

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