Microlaser in rare earths doped glasses

1.2 The three level laser equations 1.3 Studied Laser structures CHAPTER 2 Materials: Rare-Earth-doped glasses for microlaser 2A Spectroscopic Properties of Rare-Earth elements: Fundamentals 2A.1 Electronic configuration and optical properties for a Free-Rare-Earth ion.2A.2 Glass as host for RE ions: Judd-Ofelt theory and main spectroscopic parameters.2A.2.aEffects of glass matrix on the RE ions: the V Ion-matrix contribution 2A.2.b Radiative Transition and Judd-Ofelt metod: the V Ion-Photon contribution and main spectroscopic parameters 2A.2.cEffect of RE ion-ion interaction in glass and pumping processes 2A.3 Rate Equation for a three-level system: the case of Er 3+ /Yb 3+ doped glass 2B Spectroscopic Characterization of Er 3+ /Yb 3+ -doped glasses Experimental 2B.1 Glass composition and characterization 2B.2 Absorption Measurements: set-up and results 2B.3 Fluorescence Measurements: set-up and results 2B.4 Lifetime Measurements: set-up and results 2B.5 Effect of glass fusion process on the spectroscopic properties Er 3+ -doped oxide glasses: the case of fused microsphere II CHAPTER 3 Devices: Development of a waveguide laser 3A Electromagnetic Theory of optical waveguide.3B Fabrication processes: Ion-exchange, UV photo-imprinting and ion beam irradiation techniques.3B.1 Ion-Exchange.. 3B.1.aIon-Exchange technique: principle and advantages 3B.1.bIon-Exchange technique: model 3B.1.cIon-Exchange technique : Fabrication of channel waveguide in the case of MY2 and SLASY1 silicate glasses 3B.2 UV-photoimprinting technique. .3B.2.a Ge-doped glass Photosensitivity: two possibile models 3B.2.b Fabrication of Bragg grating in photosensitive thin film: the Phase Mask technique 3B.2.c Imprinting of the Bragg gratings and channel waveguides on SiO 2 GeO 2 thin film 3B.3 Ion Beam Irradiation 3B.3.aIon beam irradiation: principle and advantages 3B.3.bIon beam irradiation:Fabrication of channel waveguide in Er 3+ -doped tellurite glasses 3C Measurements 3C.1 Losses and Near-Field measurement 3C.2 Gain Measurement 3D Results 3D.1 MY2 and SLASY1 ion-exchanged channel waveguides 3D.2 Photorefracticity, gratings and waveguide imprinting in SiO 2 -GeO 2 thin film 3D.3 Characterization of ion beam irradiated channel waveguide in tellurite glass