OICC Press International Nano Letters 2228-5326 3 1 (December 2013) 2013 01 09 Effect of magnetic field on terahertz generation via laser interaction with a carbon nanotube array 10.1186/2228-5326-3-1 EN Santosh Jain Department of Applied Physics, Samrat Ashok Technological Institute, Vidisha, Madhya Pradesh, 464001, IN Jetendra Parashar Department of Applied Physics, Samrat Ashok Technological Institute, Vidisha, Madhya Pradesh, 464001, IN Rajnish Kurchania Department of Physics, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh, 462051, IN Journal Article 2013 01 09 Abstract An amplitude-modulated laser, in the presence of a static magnetic field, interacts with an array of carbon nanotubes embedded on a metallic surface. The laser exerts a ponderomotive force on the free electrons of carbon nanotubes at twice the modulation frequency that falls in the terahertz (THz) range. Each nanotube acts as an oscillatory electric dipole, producing THz radiations. The presence of magnetic field shifts the resonance condition and provides tunability. The THz radiation power increases with magnetic field strength.