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Theses

Verres pour la Photostructuration

Abstract : The increment of the need of new technologies in photonics is a perfect vector for the research and development of new components for integrated optics. The photostructuration of new glassy materials with novel optical properties is proposed. Two approaches have been conducted : Modification of the glass matrix or addition of photosensitive ions. - Germanium and gallium oxysulfide glasses have been elaborated into bulk glasses as well as amorphous thin films. They exhibit optical properties in between their respective pure sulphide or oxide counterpart in the Ge(Ga)O2 - Ge(Ga)S2 system. The photosensitivity of the oxysulfide glasses lowers as the oxygen/sulphur ratio of the glasses is increased. - The photosensitivity of silver ions within silver phosphate glasses was studied as well. Several techniques were used in order to trigger the reduction of silver such as gamma ray or electron beam irradiation, or laser beam exposure. Under a femtosecond laser with a repetition rate of 8 Mhz, emitting at 1030 nm, it was possible to create optical objects, below the diffraction limit, of about 85 nm. Those results are a new alternative for the creation of photonic composite structures.
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Submitted on : Thursday, December 3, 2009 - 4:46:51 PM
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  • HAL Id : tel-00438449, version 1

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Clément Maurel. Verres pour la Photostructuration. Matériaux. Université Sciences et Technologies - Bordeaux I, 2009. Français. ⟨tel-00438449⟩

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