Large nonlinear refraction and two photon absorption in ferroelectric Bi2VO5.5 thin films

Paramesh, Gadige and Kumari, Neelam and Krupanidhi, SB and Varma, KBR (2012) Large nonlinear refraction and two photon absorption in ferroelectric Bi2VO5.5 thin films. In: OPTICAL MATERIALS, 34 (11). pp. 1822-1825.

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Abstract

Ferroelectric c-oriented Bi2VO5.5 (BVO) thin films (thickness approximate to 300 nm) were fabricated by pulsed laser deposition on corning glass substrates. Nonlinear refractive index (n(2)) and two photon absorption coefficient (beta) were measured by Z-scan technique at 532 nm wavelength delivering pulses with 10 ns duration. Relatively large values of n(2) = 2.05 +/- 0.2 x 10(-10) cm(2)/W and beta = 9.36 +/- 0.3 cm/MW were obtained for BVO thin films. Origin of the large optical nonlinearities in BVO thin films was discussed based on bond-orbital theory of transition metal oxides. (c) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	OPTICAL MATERIALS
Publisher:	Elsevier Science
Additional Information:	Copyright for this article belongs to ELSEVIER SCIENCE BV, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	14 Dec 2012 06:10
Last Modified:	14 Dec 2012 06:10
URI:	http://eprints.iisc.ac.in/id/eprint/45505

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