Barbara Paci et al 2004 J. Phys. B: At. Mol. Opt. Phys. 37 1581 doi:10.1088/0953-4075/37/8/002
Barbara Paci1,3, Chantal Andraud2, Remi Anemian2,4 and Jean-Michel Nunzi1,5
Show affiliationsWe report on nonlinear absorption measurements of a tetraphenyl-diamine dye which was developed to be used as a transparent two-photon-type molecular material for optical limiting applications in the visible range. The excited state properties which are relevant to the process are investigated experimentally using picosecond nonlinear optical Kerr ellipsometry for differential absorption cross section monitoring. Results of the picosecond one- and two-photon absorption dynamics are presented. Time-resolved excited state absorption properties are discussed in terms of the optical limiting application.
42.70.Nq Other nonlinear optical materials; photorefractive and semiconductor materials
42.65.Hw Phase conjugation; photorefractive and Kerr effects
78.47.-p Spectroscopy of solid state dynamics
42.70.Jk Polymers and organics
33.80.Rv Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
Soft matter, liquids and polymers
Issue 8 (28 April 2004)
Received 8 August 2003
Published 1 April 2004
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