Ultrashort Dephasing-Time Measurements In Nile Blue Polymer Films
Document Type
Article
Publication Date
4-15-1998
Published In
Optics Letters
Abstract
Optical dephasing measurements using degenerate four-wave mixing (DFWM) were performed on thin dye-polymer films at room temperature. Incoherent light centered at 575 nm was used as a source for ultrafast measurements on the blue side of the inhomogeneous distribution of the oxazine dye Nile Blue. Under these conditions, a new form of interference was observed as a sinusoidal variation of the DFWM signal versus delay time. A measured interference period of 1.96 +/- 0.07 fs corresponds to the optical cycle time of the light source. Numerical solutions for the DFWM intensity confirm the oscillation effect and estimate a measured dephasing time of 2-3 fs.
Recommended Citation
Carl H. Grossman and J. J. Schwendiman.
(1998).
"Ultrashort Dephasing-Time Measurements In Nile Blue Polymer Films".
Optics Letters.
Volume 23,
Issue 8.
624-626.
DOI: 10.1364/OL.23.000624
https://works.swarthmore.edu/fac-physics/186
