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Optical and structural characterization of crystalline oxides for laser applications

Chiriu, Daniele (2007) Optical and structural characterization of crystalline oxides for laser applications. [Doctoral Thesis]

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Abstract

The development of new solid-state lasers, especially those operating between 0.9 and 3.0 µm, has renewed general interest in the optical properties of rare-earth ions (Re3+) in crystalline oxides with garnet structure. At this purpose, the aim of this study concerns the optical and structural characterization of crystalline oxides for laser application, with the prospective of enhancing efficiency and tunability of solid state lasers, and the experimentation of new materials able to meet specific technological purposes. The development of new laser materials, with mixed structure, for example, is devoted to the remote sensing of the atmosphere. Light detection and ranging (LIDAR) or differential absorption lidar (DIAL) techniques can be applied to determine molecular constituent concentrations present in the atmosphere, such as water vapor. The possibility of tuning the laser emission to investigate the desired molecule easily explains the growing interest in the optical characterization of mixed garnet materials. In this scenery mixed garnet host materials, like Y3Al5O12 (YAG), Y3Sc2Ga3O12 (YSGG), Gd3Sc2Ga3O12 (GSGG) and Y3Sc2Al3O12 (YSAG), doped with lanthanides allow the so-called compositional tuning. In this work we studied the optical and structural properties of two different materials with garnet structure: yttrium aluminum garnet (Y3Al5O12 - YAG) doped with Fe3+ ions, and the mixed structure Y3Sc2Ga3O12 (YSGG) - Y3Al5O12 (YAG) doped with Neodymium.

Item Type:Doctoral Thesis
Date:13 February 2007
Tutor:Anedda, Alberto
PhD classes:Ciclo 19 > Fisica
Institution:Universita' degli Studi di Cagliari
Divisions:Dipartimenti (fino a dicembre 2011) > Dipartimento di Fisica
Subjects:Area 02 - Scienze fisiche > FIS/01 Fisica sperimentale
Uncontrolled Keywords:Mixed garnet, crystals, yag, dial, lidar
ID Code:311
Deposited On:13 Nov 2008 08:48

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