title: Two-photon absorption and self-phase modulation measurements with shaped femtosecond laser pulses.
abstract: We show that phase-sensitive detection of spectral hole refilling can yield information about self-phase modulation and two-photon absorption coefficients. We expect that, when applied to tissue microscopy, this technique will allow the study of endogenous molecular markers beneath the surface, even if those markers are nonfluorescent.
authors: Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
authors: Martin C
authors: MC
authors: Fischer
authors: Tong
authors: T
authors: Ye
authors: Gunay
authors: G
authors: Yurtsever
authors: Anthony
authors: A
authors: Miller
authors: Maria
authors: M
authors: Ciocca
authors: Wolfgang
authors: W
authors: Wagner
authors: Warren S
authors: WS
authors: Warren
mesh_terms: D000465:Algorithms; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007834:Lasers; D036641:Microscopy, Fluorescence, Multiphoton / Q000379:methods*; D012235:Rhodamines / Q000032:analysis*
chemical_list: D012235:Rhodamines