Document Type

Journal Article

Department/Unit

Department of Physics

Title

Nonlinear optical absorption in Bi3TiNbO9 thin films using Z-scan technique

Language

English

Abstract

Bi3TiNbO9 (BTN) thin films with layered perovskite structure were fabricated on fused silica by pulsed laser deposition. The XRD pattern revealed that the films are single-phase perovskite and highly (00l) textured. Their fundamental optical constants, such as band gap, linear refractive index, and linear absorption coefficient, were obtained by optical transmittance measurements. The dispersion relation of the refractive index vs. wavelength follows the single electronic oscillator model. The nonlinear optical absorption of the films was investigated by single beam Z-scan method at a wavelength of 800 nm with laser duration of 80 fs. We obtained the nonlinear absorption coefficient β=1.44×10-7 m/W. The results show that the BTN thin films are promising for applications in absorbing-type optical devices. © 2009 Springer-Verlag.

Publication Date

2009

Source Publication Title

Applied Physics A-Materials Science & Processing

Volume

96

Issue

4

Start Page

1017

End Page

1021

Publisher

Springer

DOI

10.1007/s00339-009-5136-z

Link to Publisher's Edition

http://dx.doi.org/10.1007/s00339-009-5136-z

ISSN (print)

09478396

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