Title :
THz emission from coherently controlled photocurrents in epitaxial graphene
Author :
Sun, Dong ; Divin, Charles J. ; Berger, Claire ; De Heer, Walt ; Rioux, Julien ; Sipe, John ; Norris, Theodore B.
Author_Institution :
Center for Ultrafast Opt. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We inject ballistic electric currents into epitaxial graphene at 300 K via quantum interference between phase controlled cross-polarized 3.2 mum and 1.6 mum 200- fs pulses. The transient currents are detected via the emitted terahertz radiation.
Keywords :
ballistic transport; carbon compounds; photoconductivity; photoemission; terahertz waves; transients; ballistic electric current; coherently controlled photocurrents; epitaxial graphene; quantum interference; temperature 300 K; terahertz emission; terahertz radiation; time 200 fs; transient currents; wavelength 1.6 mum; wavelength 3.2 mum; Absorption; Control systems; Interference; Optical control; Optical films; Optical pumping; Optical scattering; Photoconductivity; Stimulated emission; Ultrafast optics; (030.1670) Coherent optical effects; (160.4236) Nanomaterials;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
