Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Large nonlinear refraction in pulsed laser deposited BCZT thin films on quartz substrates

Not Accessible

Your library or personal account may give you access

Abstract

Optical thin films based on ferroelectric materials are forerunners for novel optoelectronic and photonic applications due to their large inherent coupling between optical and electrical properties. We report here on the thickness dependence of linear and nonlinear optical properties of polycrystalline Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) thin films fabricated on quartz substrates by the pulsed laser deposition technique. In order to probe the linear optical properties of BCZT thin films, we have obtained optical transmission spectra from which the optical parameters like the refractive index and extinction coefficient were deduced using the Swanepoel method. Using the Sellemier relation, we have estimated the oscillator parameters like oscillator strength and oscillator energy from the refractive index dispersion data, which are indicative of the efficiency of the electro-optic coupling process. Further, the third-order optical nonlinearity of these thin films was measured by a closed-aperture Z-scan technique with a low-power, continuous-wave He–Ne laser as the excitation source. These films exhibited high optical nonlinearity, and the nonlinear refractive index was determined to be 5×107m2/W. The enhanced nonlinear refraction in BCZT thin films at the low power regime could be attributed to both photothermal and photorefractive origin with a plausible larger contribution from the latter. Such a large nonlinear optical response exhibited at low optical powers in BCZT thin films is very promising technologically, as it may find applications in a number of photonic devices such as optical interconnects, optical processors, optical memories, and waveguide modulators.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Nonlinear optical properties of Fe/BaTiO3 composite thin films prepared by two-target pulsed-laser deposition

Weitian Wang, Guang Yang, Zhenghao Chen, Yueliang Zhou, Huibin Lu, and Guozhen Yang
J. Opt. Soc. Am. B 20(6) 1342-1345 (2003)

Rh:BaTiO3 thin films with large nonlinear optical properties

Guang Yang, Huanhua Wang, Guotai Tan, Anquan Jiang, Yueliang Zhou, and Zhenghao Chen
Appl. Opt. 41(9) 1729-1732 (2002)

Femtosecond third-order optical nonlinearity of polycrystalline BiFeO3

Bing Gu, Yang Wang, John Wang, and Wei Ji
Opt. Express 17(13) 10970-10975 (2009)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved