Femtosecond two-photon laser-induced fluorescence of krypton for high-speed flow imaging. Academic Article

abstract

• Ultrashort-pulse (femtosecond-duration) two-photon laser-induced fluorescence (fs-TPLIF) of an inert gas tracer krypton (Kr) is investigated. A detailed spectroscopic study of fluorescence channels followed by the 5p'4p excitation of Kr at 204.1 nm is reported. The experimental line positions in the 750-840 nm emission region agree well with the NIST Atomic Spectra Database. The present work provides an accurate listing of relative line strengths in this spectral region. In the range of laser pulse energies investigated, a quadratic dependence was observed between the Kr-TPLIF signal and the laser pulse energy. The single-laser-shot 2D TPLIF images recorded in an unsteady jet demonstrate the potential of using fs excitation at 204.1 nm for mixing and flow diagnostic studies using Kr as an inert gas tracer.

authors

• Kulatilaka, Waruna

published proceedings

• Opt Lett

author list (cited authors)

• Wang, Y., Capps, C., & Kulatilaka, W. D.

citation count

• 21

complete list of authors

• Wang, Yejun||Capps, Cade||Kulatilaka, Waruna D

publication date

• February 2017

publisher

• Optica Publishing Group  Publisher

published in

• Optics Letters  Journal

keywords

• 51 Physical Sciences
• 5102 Atomic, Molecular And Optical Physics

PubMed Central ID

• 28198846

Digital Object Identifier (DOI)

• 10.1364/OL.42.000711

start page

• 711

end page

• 714

volume

• 42

issue

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1364%2Fol.42.000711