Multiphoton excitation of disc shaped quantum dot in presence of laser (THz) and magnetic field for bioimaging

作者：Lahon Siddhartha^*; Gambhir Monica; Jha P Kumar; Mohan Man

来源：Physica Status Solidi B-Basic Solid State Physics, 2010, 247(4): 962-967.

DOI：10.1002/pssb.201046027

• optical properties
• quantum dots
• quantum optics
• multiphoton excitation

Recently. multiphoton processes in nanostructures have attracted much attention for their promising applications, especially in growing field of bioimaging. Here we investigate the optical resoponse 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 dirven intraband transitions between the states of the conduction band. Several interesting features namely dynamic stark shift, power broadening, and hole burning on excited levels degeneract breaking are observed with variation of electric and magnetic field strengths. Enhancement and power brodening observed for excited states probabilities with increase of external field are direcly linked to the emission spectra of QD and will be useful for making future biomaging devices.

• 出版日期2010-4