We report a novel Fourier transform method for measuring two-photon excitation spectra. We demonstrate this method using simple dye molecules and discuss its applications in two-photon fluorescence microscopy and optimal control. This method facilitates an intuitive interpretation of recent control experiments in terms of tuning the nonlinear spectrum of the exciting laser source.
© 2005 Optical Society of America
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.4180) Atomic and molecular physics : Multiphoton processes
(180.2520) Microscopy : Fluorescence microscopy
(300.6410) Spectroscopy : Spectroscopy, multiphoton
(320.5540) Ultrafast optics : Pulse shaping
Jennifer P. Ogilvie, Kevin J. Kubarych, Antigoni Alexandrou, and Manuel Joffre, "Fourier transform measurement of two-photon excitation spectra: applications to microscopy and optimal control," Opt. Lett. 30, 911-913 (2005)