Fast photodetectors at 1550 nm wavelength for generation and detection of sub-THz and THz waves. Photodétecteurs rapides à la longueur d’onde de 1550 nm pour la génération et la détection d’ondes sub-THz et THz

Archive ouverte : Thèse

Billet, Maximilien

Edité par HAL CCSD

Fast photodetectors are optoelectronic devices wich allow to generate and to detect electromagnetic waves at sub-THz and THz frequencies. This thesis presents the design, the fabrication and the characterization of fast photodetectors made using III-V semiconductors. The objective is to develop systems working at a wavelength of 1550nm, compatibleswith the telecommunication technologies. We will study in detail LT-GaAs photoconductors for sub-sampling, InAlAs/InGaAs-MSM photodetectors for sub-sampling and photomixing and InGaAs/InP UTC-photodiodes for photomixing. . Les photodétecteurs rapides sont des composants optoélectroniques qui permettent de générer et de détecter des ondes de fréquences sub-THz et THz. Cette thèse présente la conception, la fabrication et la caractérisation de photodétecteurs rapides à semiconducteurs III-V. L’objectif est de proposer des systèmes fonctionnant à la longueur d’onde de 1550 nm, et donc compatibles avec les technologies des télécommunications. Nous étudions en détail des photoconducteurs en AsGa-BT pour le sous-échantillonnage, des photodétecteurs de type MSM-InAlAs/InGaAs pour le sous-échantillonnage et le photomélange et des photodiodes UTC en InGaAs/InP pour le photomélange.

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