Photolytic-interference-free, femtosecond two-photon fluorescence imaging of atomic hydrogen. Academic Article uri icon


  • 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.

published proceedings

  • Opt Lett

author list (cited authors)

  • Kulatilaka, W. D., Gord, J. R., Katta, V. R., & Roy, S.

citation count

  • 80

complete list of authors

  • Kulatilaka, Waruna D||Gord, James R||Katta, Viswanath R||Roy, Sukesh

publication date

  • August 2012