Your browser does not support JavaScript!

Home    Μελέτη της εκπομπής σύμφωνης ακτινοβολίας και της κβαντικής συμβολής σε άτομα Καλίου  

Results - Details

Add to Basket
[Add to Basket]
Identifier uch.physics.phd//2002merlemis
Title Μελέτη της εκπομπής σύμφωνης ακτινοβολίας και της κβαντικής συμβολής σε άτομα Καλίου
Alternative Title Stimulated emissions and quantum interference in potassium atom-laser interaction
Author Μερλέμης, Νίκος
Thesis advisor Ευθυμιόπουλος, Θ.
Abstract The generation of coherent radiation by third or higher order non-linear effects was studied for the 4S1/2-6S1/2 two-photon excitation of the potassium atoms, under weak laser intensity (unfocused laser beam). The experiments done were focused on the radiation generated through the intermediate states 5P3/2,5P1/2 and 4P3/2,4P1/2. The processes studied were the Parametric Four-Wave Mixing (PFWM), the Four Wave Mixing with internally generated photons involved (two-step FWM), the Stimulated Hyper-Raman Scattering (SHRS) and the Amplified Spontaneous Emission (ASE). More specifically we studied: · The spectral, spatial and temporal characteristics of the generated radiations. · The processes involved in the generation of radiation and their competition. · The contribution of the experimental parameters to the enhancement or the cancellation of the various radiating channels. · The influence of quantum interference effects on the emission mechanisms. · The contribution of the internally generated radiation to the emission of new fields. · The contribution of effects due to Electromagnetically Induced Transparency The activation of many energy levels of Potassium, due to internally generated fields, makes the system multilevel in its interaction with the external laser radiation. The study proved the complexity of the atomic system and the need for further experimental and theoretical work.
Language Greek
Issue date 2002-12-01
Date available 2003-02-18
Collection   School/Department--School of Sciences and Engineering--Department of Physics--Doctoral theses
  Type of Work--Doctoral theses
Views 687

Digital Documents
No preview available

Download document
View document
Views : 11