Designing novel chalcone single crystals with ultrafast nonlinear optical responses and large multi-photon absorption coefficients

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A chalcone single crystal, 1-(4-chlorophenyl)-3-(4-methoxyphenyl)prop-2-en-1-one that is transparent over the visible to infrared region is introduced as a new potential material to third-order nonlinear optical applications. The crystal exhibits ultrafast optical response(<= 90 fs) and large optical nonlinearity in the wavelength range 800-1200 nm. A very large effective two-photon absorption coefficient beta(eff) exceeding 120 cm/GW can be obtained with this chalcone crystal, at a low intensity threshold of 41 MW/cm(2). The mechanism of nonlinear absorption at different levels of intensity has been discussed. The crystal shows no damage against the laser pulse intensity as high as 8 GW/cm(2). We discuss the molecular and crystal designing of chalcones with large and ultrafast optical nonlinearity combined with low optical cut-off (<450nm). (C) 2010 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
Issue Date
2010-09
Language
English
Article Type
Article
Keywords

EXCITED-STATE ABSORPTION; 2-PHOTON ABSORPTION; DERIVATIVES; DYES; CHROMOPHORES; 2ND-ORDER; SYMMETRY; GROWTH; MODEL

Citation

CURRENT APPLIED PHYSICS, v.10, no.5, pp.1290 - 1296

ISSN
1567-1739
DOI
10.1016/j.cap.2010.03.006
URI
http://hdl.handle.net/10203/212729
Appears in Collection
PH-Journal Papers(저널논문)
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