Title :
Terahertz Absorption by Magnetoplasma Sound Wave Excitation in Semiconductor Heterostructures
Author :
Zhang, C. ; Hessami Pilehrood, S. ; Lewis, R.A.
Author_Institution :
Sch. of Eng. Phys., Wollongong Univ., NSW
Abstract :
By employing the exact time-dependent wavefunctions for an electron gas under a quantizing magnetic field and laser radiation, we study the dielectric properties of a system when the laser frequency equals the cyclotron frequency. This resonant condition leads to a new magneto-photon-plasmon (magnetopolariton) mode. Unlike the ordinary magnetoplasmon, the energy of the new mode increases linearly with the radiation intensity. As the wavenumber increases, this new mode behaves like a sound wave. The absorption due to the plasmon mode,Jfrm[1/epsi(q,w)], is presented
Keywords :
acoustic waves; cyclotron resonance; magneto-optical effects; polaritons; semiconductor heterojunctions; two-dimensional electron gas; wave functions; cyclotron frequency; electron gas; magneto-photon-plasmon mode; magnetoplasma sound wave excitation; magnetopolariton; semiconductor heterostructures; terahertz absorption; Absorption; Electrons; Frequency; Gas lasers; Laser excitation; Laser modes; Magnetic fields; Magnetic resonance; Magnetic semiconductors; Semiconductor lasers;
Conference_Titel :
Optoelectronic and Microelectronic Materials and Devices, 2004 Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-8820-8
DOI :
10.1109/COMMAD.2004.1577494
