Title

Optical Power Limiting in Fluorinated Graphene Oxide: An Insight into the Nonlinear Optical Properties

Authors

Authors

P. Chantharasupawong; R. Philip; N. T. Narayanan; P. M. Sudeep; A. Mathkar; P. M. Ajayan;J. Thomas

Comments

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Abbreviated Journal Title

J. Phys. Chem. C

Keywords

CARBON NANOTUBES; ABSORPTION COEFFICIENTS; PHOTOVOLTAIC DEVICES; LASER-PULSES; SUSPENSIONS; LIQUIDS; SOLIDS; FILMS; C-60; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary

Abstract

Fluorination of carbon nanomaterials has many advantages due to the unique nature of the carbon fluorine (C-F) bond. In this work, we report the optical power limiting properties of fluorinated graphene oxide (F-GO) using the optical z-scan technique. In addition, we used the photoacoustic technique to gain insight into the nonlinear processes involved in the optical limiting of samples. The photoacoustic technique enabled us to confirm that optical limiting observed in F-GO at low fluence arises from nonlinear absorption, while that at higher fluence is due to nonlinear scattering. Moreover, we found that F-GO has high nonlinear absorption and nonlinear scattering and its optical limiting threshold is about an order of magnitude better than that of graphene oxide (GO).

Journal Title

Journal of Physical Chemistry C

Volume

116

Issue/Number

49

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

25955

Last Page

25961

WOS Identifier

WOS:000312176100038

ISSN

1932-7447

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