Optoelectronic modulation by multi-wall carbon nanotubes

We report the observation of photoconduction and a strong nonlinear optical absorptive response exhibited by multi-wall carbon nanotubes. An aerosol pyrolysis method was employed for the preparation of the samples. Measurements of the optical transmittance with 7 ns pulses at 1064 nm wavelength allo...

Full description

Saved in:
Bibliographic Details
Published in:Nanotechnology 2013-02, Vol.24 (4), p.045201-045201
Main Authors: Torres-Torres, C, Peréa-López, N, Martínez-Gutiérrez, H, Trejo-Valdez, M, Ortíz-López, J, Terrones, M
Format: Article
Language:English
Subjects:
Aerosols
Chemical synthesis methods
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electrodes
Equipment Design
Equipment Failure Analysis
Exact sciences and technology
Fullerenes and related materials
Light
Materials science
Materials Testing
Methods of nanofabrication
Modulation
Modulators
Multi wall carbon nanotubes
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Nanotubes, Carbon - chemistry
Nanotubes, Carbon - radiation effects
Nonlinearity
Opacity
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Photometry - instrumentation
Photometry - methods
Physics
Pyrolysis
Refractometry - methods
Surface Properties
Visible and ultraviolet spectra
Wavelengths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report the observation of photoconduction and a strong nonlinear optical absorptive response exhibited by multi-wall carbon nanotubes. An aerosol pyrolysis method was employed for the preparation of the samples. Measurements of the optical transmittance with 7 ns pulses at 1064 nm wavelength allowed us to identify a two-photon absorption effect as the main mechanism of third-order nonlinearity. Photoconductive experiments at 445 nm wavelength seem to confirm the possibility for generating non-resonant multi-photonic absorption processes in the multi-wall carbon nanotubes. By the optical control of the conductivity in the nanotubes, we implement an optoelectronic amplitude modulator device with potential applications for sharp selective functionalities.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/4/045201