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Description
The study of subwavelength behavior of light and nanoscale lasing has broad
potential applications in various forms of computation i.e. optical and quantum, as well as
in energy engineering. Although this field has been under active research, there has been
little work done on describing the behaviors of threshold and saturation. Particularly, how
the gain-molecule behavior affects the lasing behavior has yet to be investigated.
In this work, the interaction of surface-plasmon-polaritons (SPPs) and molecules is
observed in lasing. Various phenomenologies are observed related to the appearance of the
threshold and saturation regions. The lasing profile, as a visual delimiter of lasing threshold
and saturation, is introduced and used to study various parametrical dependencies of lasing,
including the number-density of molecules, the molecular thickness and the frequency
detuning between the molecular transition frequency and the SPP resonant frequency. The
molecular population distributions are studied in terminal and dynamical methods and are
found to contain unexpected and theoretically challenging properties. Using an average
dynamical analysis, the simulated spontaneous emission cascade can be clearly seen.
Finally, theoretical derivations of simple 1D strands of dipoles are presented in both
the exact and mean-field approximation, within the density matrix formalism. Some
preliminary findings are presented, detailing the observed behaviors of some simple
systems.
potential applications in various forms of computation i.e. optical and quantum, as well as
in energy engineering. Although this field has been under active research, there has been
little work done on describing the behaviors of threshold and saturation. Particularly, how
the gain-molecule behavior affects the lasing behavior has yet to be investigated.
In this work, the interaction of surface-plasmon-polaritons (SPPs) and molecules is
observed in lasing. Various phenomenologies are observed related to the appearance of the
threshold and saturation regions. The lasing profile, as a visual delimiter of lasing threshold
and saturation, is introduced and used to study various parametrical dependencies of lasing,
including the number-density of molecules, the molecular thickness and the frequency
detuning between the molecular transition frequency and the SPP resonant frequency. The
molecular population distributions are studied in terminal and dynamical methods and are
found to contain unexpected and theoretically challenging properties. Using an average
dynamical analysis, the simulated spontaneous emission cascade can be clearly seen.
Finally, theoretical derivations of simple 1D strands of dipoles are presented in both
the exact and mean-field approximation, within the density matrix formalism. Some
preliminary findings are presented, detailing the observed behaviors of some simple
systems.
ContributorsBrewer, Andre J (Author) / Sukharev, Maxim (Thesis advisor) / Rivera, Daniel E (Thesis advisor) / Menéndez, Jose (Committee member) / Arizona State University (Publisher)
Created2017