3,30-Benzene-1,4-diylbis[1-(substituted)phenylprop-2-en-1-one] derivatives:A new class of materials for third-order nonlinear optical applications

Poornesh, P and Ravi, K and Umesh, G and Hegde, Pramod K and Manjunatha, M G and Manjunatha, K B and Adhikari, A V (2010) 3,30-Benzene-1,4-diylbis[1-(substituted)phenylprop-2-en-1-one] derivatives:A new class of materials for third-order nonlinear optical applications. Optics Communications, 283 (7). pp. 1519-1527. ISSN 0030-4018

[img] PDF
OPTICS COMMUNICATIONS PERSONAL 2010.pdf - Published Version
Restricted to Registered users only

Download (693kB) | Request a copy
Official URL: http://yadda.icm.edu.pl/yadda/element/bwmeta1.elem...

Abstract

We have investigated the third-order nonlinear optical parameters of Bischalcones embedded in DMF solution and in solid PMMA matrix, by Z-scan technique using nanosecond laser pulse trains at 532 nm. Z-scan results reveal that the Bischalcones exhibits negative nonlinear refractive index as high as 10�11 esu. The molecular two-photon absorption cross-section r0 2 of Bischalcones were of the order 10�46 cm4 s/photon, which is nearly two orders of magnitude larger than that of Rhodamine 6G which is 10�48 – 10�50 cm4 s/photon. We found that, the two-photon absorption (TPA) is the dominating nonlinear process leading to nonlinear absorption in both the cases in solution and as well as in solid medium. Based on TPA process, the Bischalcones exhibit good optical power limiting of nanosecond laser pulses at the input wavelength. The nonlinear optical parameters found to increase on enhancing the strength of the electron donor groups indicating the dependence and importance of electron donor/ acceptor units on third-order nonlinear optical susceptibility v(3)

Item Type: Article
Uncontrolled Keywords: Nonlinear optics Z-scan Two-photon absorption (TPA) Optical power limiting
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 20 Aug 2013 08:50
Last Modified: 21 Oct 2013 10:36
URI: http://eprints.manipal.edu/id/eprint/136827

Actions (login required)

View Item View Item