Photothermal, photoconductive and nonlinear optical effects induced by nanosecond pulse irradiation in multi-wall carbon nanotubes

Garcia-Merino, J. A.; Martinez-Gonzalez, C. L.; Torres-San Miguel, C. R.; Trejo-Valdez, M.; Martinez-Gutierrez, H.; Torres-Torres, C.

Abstract

The influence of the optical absorption exhibited by multi-wall carbon nanotubes on their photothermal, photoconductive and nonlinear optical properties was evaluated. The experiments were performed by using a Nd:YAG laser system at 532 nm wavelength and 1 ns pulse duration. The observations were carried out in thin film samples conformed by carbon nanotubes prepared by an aerosol pyrolysis method; Raman spectroscopy studies confirmed their multi-wall nature. Theoretical and numerical calculations based on the heat equation allow us to predict the temporal response of the induced effects associated to the optical energy transference. A two-wave mixing method was employed to explore the third order nonlinear optical response exhibited by the sample. A dominant thermal process was identified as the main physical mechanism responsible for the optical Kerr effect. Potential applications for developing a monostable multivibrator exhibiting different time-resolved characteristics were analyzed. (C) 2015 Elsevier B.V. All rights reserved.

Más información

Título según WOS: ID WOS:000350091600005 Not found in local WOS DB
Título de la Revista: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volumen: 194
Editorial: Elsevier
Fecha de publicación: 2015
Página de inicio: 27
Página final: 33
DOI:

10.1016/j.mseb.2014.12.022

Notas: ISI