http://dx.doi.org/10.1016/j.matlet.2009.12.010">
 

Document Type

Journal Article

Department/Unit

Department of Physics

Title

Z-scan measurement for the nonlinear absorption of Bi2.55La0.45TiNbO9 thin films

Language

English

Abstract

Bi2.55La0.45TiNbO9 (BLTN-0.45) thin films with layered aurivillius structure were fabricated on fused silica substrates by pulsed laser deposition technique. Their structure, fundamental optical constants, and nonlinear absorption characteristics have been studied. The film exhibits a high transmittance (> 60%) in visible-infrared region. The optical band gap energy was found to be 3.44 eV. The optical constant and thickness of the films were characterized using spectroscopic ellipsometric (SE) method. The nonlinear optical absorption properties of the films were investigated by the single-beam Z-scan method at a wavelength of 800 nm laser with a duration of 80 fs. We obtained the nonlinear absorption coefficient β = 4.64 × 10- 8 m/W. The results show that the BLTN-0.45 thin film is a promising material for applications in absorbing-type optical device. © 2009 Elsevier B.V.

Keywords

Bi2.55La0.45TiNbO9, Nonlinear optical absorption, Optical constant, Pulsed laser deposition

Publication Date

2010

Source Publication Title

Materials Letters

Volume

64

Issue

5

Start Page

589

End Page

591

Publisher

Elsevier

ISSN (print)

0167577X

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