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Mutual Optical Transparency through Quantum Wells in Strong Terahertz Fields
Author(s) -
Citrin D.S.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200211)234:1<147::aid-pssb147>3.0.co;2-n
Subject(s) - terahertz radiation , floquet theory , exciton , physics , excitation , beam (structure) , quantum well , wave function , transmission (telecommunications) , field (mathematics) , optics , optoelectronics , condensed matter physics , atomic physics , laser , quantum mechanics , telecommunications , nonlinear system , mathematics , computer science , pure mathematics
In the presence of a strong THz field, the exciton wavefunctions in a quantum well are described by Floquet states. As a consequence, exciton states dressed by a THz field have multiple optical resonances. If an optical beam is resonant with any of these frequencies, the beam is attenuated upon its transmission. Here we show that one can judiciously choose two coherent optical beams tuned to two different resonant frequencies, so that the beams produce no interband excitation, and thus are unattenuated.