Fano signatures in the intersubband terahertz response of optically excited semiconductor quantum wells.
作者信息
Golde D, Wagner M, Stehr D, Schneider H, Helm M, Andrews A M, Roch T, Strasser G, Kira M, Koch S W
机构信息
Department of Physics and Materials Sciences Center, Philipps-University, Renthof 5, 35032 Marburg, Germany.
出版信息
Phys Rev Lett. 2009 Mar 27;102(12):127403. doi: 10.1103/PhysRevLett.102.127403. Epub 2009 Mar 24.
Abstract
Absorption and transmission spectra of broadband terahertz pulses are measured to probe the intersubband response of an optically excited quantum-well heterostructure. While the terahertz absorption shows the single peak of the resonant intersubband transition, the transmission spectra display strong Fano signatures due to the phase sensitive superposition of ponderomotive and terahertz currents as predicted by our microscopic theory.
摘要
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