Dissertation/ Thesis
Investigation of quantum dots VECSEL for the realization of a coherent dual wavelength laser ; Etude des boites quantiques pour la réalisation d'un laser VECSEL bi-fréquence cohérent
| Τίτλος: | Investigation of quantum dots VECSEL for the realization of a coherent dual wavelength laser ; Etude des boites quantiques pour la réalisation d'un laser VECSEL bi-fréquence cohérent |
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| Συγγραφείς: | Brevalle, Gaëlle |
| Συνεισφορές: | Institut des Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), INSA de Rennes, Hervé Folliot, Mehdi Alouini |
| Πηγή: | https://theses.hal.science/tel-02903102 ; Optique / photonique. INSA de Rennes, 2019. Français. ⟨NNT : 2019ISAR0023⟩. |
| Στοιχεία εκδότη: | HAL CCSD |
| Έτος έκδοσης: | 2019 |
| Συλλογή: | Université de Rennes 1: Publications scientifiques (HAL) |
| Θεματικοί όροι: | VECSEL, InAs/InP quantum dots, Dual-frequency laser, Saturated absorption spectroscopy, SHB, Coupling, Boites quantiques InAs/InP, Laser bi-fréquence, Spectroscopie de saturation d’absorption, Couplage, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic |
| Περιγραφή: | This PhD work focuses on several experimental studies, allowing to relate the performances of a dual-frequency laser to the structural and physics properties of quantum dots (QDs). These works aim to develop a new kind of VECSEL (vertical external cavity surface emitting laser), integrating lnAs/lnP QDs emitting at 1.55 µm, in order to make tunable and robust (i.e. involving a weak coupling between the two modes) dual-frequency laser Firstly, a growth study of the QDs is realized. The control of the growth parameters ensures the control of the density and the inter-QDs distance, and thus of the electronic coupling. Following this study, the growth parameters are carefully selected to get high density QDs; then the stack of the QDs planes forming the active medium is realized. The next study allowing the quantification of the photonic coupling by the homogeneous broadening are the electronic coupling is performed in quantum wells, quantum dashes and quantum dots, depending on the temperature and the carriers density. For this, saturated absorption spectroscopy, based on the Spectral Hole Burning (SHB) phenomenon, is used. The results obtained are linked to the last study that addresses the coupling between the two modes of the dual-frequency VECSEL by the measurement of the Lamb coupling constant. The measurement is performed in a quantum well based VECSEL first, to calibrate the experimental setup and to get the value for comparisons with QDs. Finally, preliminary results obtained in multimode operation of QDs based VECSEL are presented. They reveal to be very promising for the achievement of a dual-frequency operation. ; Ce travail de thèse porte sur différentes études expérimentales permettant de lier les performances d'un laser bi-fréquence aux propriétés structurales physiques des boites quantiques (BQs). L'objectif principal est de développer une nouvelle plateforme de lasers de type VECSEL (vertical extem cavity surface emitting laser), intégrant des BQs lnAs/lnP émettant à 1,55 µm, afin de réaliser des ... |
| Τύπος εγγράφου: | doctoral or postdoctoral thesis |
| Γλώσσα: | French |
| Relation: | NNT: 2019ISAR0023 |
| Διαθεσιμότητα: | https://theses.hal.science/tel-02903102 https://theses.hal.science/tel-02903102v2/document https://theses.hal.science/tel-02903102v2/file/These_Brevalle_Gaelle.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| Αριθμός Καταχώρησης: | edsbas.DB969DA3 |
| Βάση Δεδομένων: | BASE |
| Η περιγραφή δεν είναι διαθέσιμη |