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Full-Text Articles in Quantum Physics
Phase Control In Atomic Coherence, Utsab Khadka
Phase Control In Atomic Coherence, Utsab Khadka
Graduate Theses and Dissertations
In this thesis, atomic coherence is used to enhance nonlinear optical processes in multi-level atoms. The multi-photon transitions are driven resonantly, and at the same time without absorptive losses, by using electromagnetically induced transparency (EIT), thereby allowing the study of χ(3) and χ(5) nonlinearities using weak driving fields. The coherently modified probe beam(s) and the atom-radiated signal fields arising from four- and six- wave- mixing (FWM and SWM) processes are measured in the spectral, temporal and spatial domains.
In a three-level ladder-type atomic system, multiple peaks having spectral asymmetries are observed in the EIT window as well as …