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Multiphoton excitation of disc shaped quantum dot in presence of laser (THz) and magnetic field for bioimaging
Author(s) -
Lahon Siddhartha,
Gambhir Monica,
Jha P. Kumar,
Mohan Man
Publication year - 2010
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/pssb.201046027
Subject(s) - excited state , excitation , magnetic field , floquet theory , laser , quantum dot , field (mathematics) , terahertz radiation , physics , atomic physics , optoelectronics , condensed matter physics , optics , quantum mechanics , mathematics , nonlinear system , pure mathematics
Recently, multiphoton processes in nanostructures have attracted much attention for their promising applications, especially in growing field of bioimaging. Here we investigate the optical response of quantum disc (QD) in the presence of laser and a static magnetic field. Floquet theory is employed to solve the equation of motion for laser driven intraband transitions between the states of the conduction band. Several interesting features namely dynamic stark shift, power broadening, and hole burning on excited levels degeneracy breaking are observed with variation of electric and magnetic field strengths. Enhancement and power broadening observed for excited states probabilities with increase of external fields are directly linked to the emission spectra of QD and will be useful for making future bioimaging devices.