Micro-dispositifs accordables pour la conversion de fréquences optiques
type: Dataset
description: The lack of suitable monochromatic continuous-wave terahertz source consists of one the majors hurdles for terahertz spectrum applications development in various domains. Both electronic and optic technologies don't allow covering all terahertz electromagnetic spectrum (0.3-10 THz). In this context and in order to generate high spectral purity wave over all THz spectrum window, a well-established technique consists in the photo-mixing procedure, where an ultrafast optoelectronic device is pumped by two laser signals whose frequencies are separated by an offset in the 0.3-5 THz window. In this work, we propose a novel dual-wavelength photonic micro resonator to provide a dual-mode monolithic semiconductor laser for THz generation by photo-mixing instead of the basic photo-mixing approach based on the use of two independent lasers. The novel photonic microresonator associates a vertical Fabry Perot (FP) cavity and photonic crystal membrane (PCM)resonators. A PCM exhibiting a resonant mode at normal incidence is inserted in a FP cavity with a resonant vertical mode at the same wavelength λ0. The resulting strong optical coupling leads to the generation of two mixed modes separated by a frequency difference which can be tuned through the loss rate of the PCM and its position inside the FP cavity. The work of this thesis focuses on the design, the micro-fabrication and the characterization of the dual-frequency resonator and its application to the realization of a single compact and flexible dual-mode semiconductor laser source around 1.55μm.
identifier: NNT: 2012ECDL0027
issued: 2026-05-15T04:57:12.996419
language: fr
modified: 2026-05-15T04:57:12.996424
contact point: Organization
  fn: CCSD
keyword: conversion-de-frequences-optiques
keyword: cristal-photonique
keyword: dual-wavelength-laser
keyword: infoeu-reposemanticsdoctoralthesis
keyword: laser-bi-frequence
keyword: micro-cavite
keyword: microcavity
keyword: moems
keyword: optical-frequency-conversion
keyword: photo-melange
keyword: photomixing
keyword: photonic-crystal
keyword: spiotherengineering-sciences-physicsother
keyword: terahertz
keyword: theses
landing page: https://theses.hal.science/tel-00777701

Micro-dispositifs accordables pour la conversion de fréquences optiques
type: Distribution
format: HTML
issued: 2026-05-15T04:57:13.042711
modified: 2026-05-15T04:57:12.963282
access URL: https://theses.hal.science/tel-00777701

test_moissonnage_selune
type: Agent