Optical rectification in a carbon nanotube array and terahertz radiation generation

Terahertz radiation generation via optical rectification of an amplitude modulated laser in an array of carbon nanotubes is explored. The laser of finite spot size, traveling perpendicular to the nanotubes, exerts a ponderomotive force on free electrons of nanotubes at the modulation frequency Ω. It...

Full description

Saved in:
Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2012-07, Vol.44 (10), p.2069-2071
Main Authors: Parashar, Jetendra, Sharma, Hirdesh
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Physics
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:Terahertz radiation generation via optical rectification of an amplitude modulated laser in an array of carbon nanotubes is explored. The laser of finite spot size, traveling perpendicular to the nanotubes, exerts a ponderomotive force on free electrons of nanotubes at the modulation frequency Ω. It sets in resonant electron oscillations of nanotubes whereby each nanotube acts as an oscillatory electric dipole, producing terahertz radiation. ► We study terahertz radiation generation employing.► Optical rectification of a laser in an array of carbon nanotubes produces terahertz radiation.► Each nanotube acts as an oscillatory electric dipole, producing terahertz radiation.► THz power shows a resonant enhancement at laser modulation frequency Ω∼ωp′/2.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2012.06.013