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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 15 — Aug. 1, 2012
  • pp: 3051–3053

Photolytic-interference-free, femtosecond two-photon fluorescence imaging of atomic hydrogen

Waruna D. Kulatilaka, James R. Gord, Viswanath R. Katta, and Sukesh Roy  »View Author Affiliations


Optics Letters, Vol. 37, Issue 15, pp. 3051-3053 (2012)
http://dx.doi.org/10.1364/OL.37.003051


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Abstract

We discuss photolytic-interference-free, high-repetition-rate imaging of reaction intermediates in flames and plasmas using femtosecond (fs) multiphoton excitation. The high peak power of fs pulses enables efficient nonlinear excitation, while the low energy nearly eliminates interfering single-photon photodissociation processes. We demonstrate proof-of-principle, interference-free, two-photon laser-induced fluorescence line imaging of atomic hydrogen in hydrocarbon flames and discuss the method’s implications for certain other atomic and molecular species.

© 2012 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced
(320.7150) Ultrafast optics : Ultrafast spectroscopy
(350.3450) Other areas of optics : Laser-induced chemistry

ToC Category:
Spectroscopy

History
Original Manuscript: May 29, 2012
Manuscript Accepted: June 7, 2012
Published: July 16, 2012

Virtual Issues
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Waruna D. Kulatilaka, James R. Gord, Viswanath R. Katta, and Sukesh Roy, "Photolytic-interference-free, femtosecond two-photon fluorescence imaging of atomic hydrogen," Opt. Lett. 37, 3051-3053 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-15-3051


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