Two-photon absorption and optical power limiting based on new organic dyes

Citation
Gy. Zhou et al., Two-photon absorption and optical power limiting based on new organic dyes, CHIN PHYS L, 18(8), 2001, pp. 1120-1122
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256-307X → ACNP
Volume
18
Issue
8
Year of publication
2001
Pages
1120 - 1122
Database
ISI
SICI code
0256-307X(200108)18:8<1120:TAAOPL>2.0.ZU;2-Z
Abstract
Two new organic dye samples J and L with a large two-photon absorption (TPA ) cross section have been reported. The linear absorption spectra show that there is no linear absorption at the wavelength from 650 to 1200 mn. The m olecular TPA cross section was measured to be as high as 2.59 x 10(-47) cm( 4.)s and 2.98 x 10(-47) cm(4.)s at 1064 nm for samples J and L, respectivel y. The input-output curves indicate that there is a clear optical power lim iting behaviour when the input intensity is higher than 0.4 GW/cm(2). Furth ermore, the basic theory of the TPA process has been discussed.