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Proceedings Paper

Three-photon absorption materials and applications
Author(s): Changgui Lu; Yiping Cui
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Paper Abstract

We have demonstrated efficient three-photon excitation in a number of nonlinear organic materials developed at our center or in cooperation with other research groups. The three-photon absorption (3PA) properties of these materials are studied using a femtosecond Ti:sapphire oscillator-amplifier laser system associated with an optical-parametric amplifier. Considering the transverse intensity distribution of the incident beam during measurements, the 3PA induced nonlinear transmission of the incident beam with a Gaussian transverse spatial profile is derived. Some of the 3PA-active materials are highly fluorescent while some others are nonfluorescent. In one of these materials, vibrational resonance enhanced broadband multiphoton absorption was founded. These materials can be used in optical power limiting and stabilization, frequency-upconversion imaging and microscopy etc. Some recent experiments of three-photon pumped power limiting and stabilization are briefly presented.

Paper Details

Date Published: 4 January 2008
PDF: 8 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68392H (4 January 2008); doi: 10.1117/12.771360
Show Author Affiliations
Changgui Lu, Southeast Univ. (China)
Yiping Cui, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)

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