PORTO @ 
Archivio Istituzionale della Ricerca
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishSlow-light (SL) in active photonic crystal (PhC) waveguides enhances the modal gain per unit length [1], with application to shorter lasers [2]. Recently, we have proposed a coupled-Bloch-mode (CBM) approach [4] to analyze active PhC structures. Essentially, the presence of material gain in a line-defect waveguide is viewed as a weak perturbation to a reference structure with purely real refractive index. In the SL regime, the optical gain induces a distributed feedback (DFB) between the counterpropagating Bloch modes of the reference waveguide. The active waveguide is efficiently described by a scattering matrix [5], which accounts for the SL gain enhancement and gain-induced DFB. In particular, this effect reveals that SL semiconductor optical amplifiers may benefit from a smaller linewidth enhancement factor (LEF) [5], as they would experience a weaker backscattering.
Rate equation analysis of slow-light photonic crystal lasers / Saldutti, M.; Gioannini, M.. - ELETTRONICO. - (2021), pp. 1-1. ((Intervento presentato al convegno 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 tenutosi a Munich, Germany nel 21-25 June 2021 [10.1109/CLEO/Europe-EQEC52157.2021.9541739].
| Titolo: | Rate equation analysis of slow-light photonic crystal lasers | |
| Autori: | ||
| Data di pubblicazione: | 2021 | |
| Abstract: | Slow-light (SL) in active photonic crystal (PhC) waveguides enhances the modal gain per unit leng...th [1], with application to shorter lasers [2]. Recently, we have proposed a coupled-Bloch-mode (CBM) approach [4] to analyze active PhC structures. Essentially, the presence of material gain in a line-defect waveguide is viewed as a weak perturbation to a reference structure with purely real refractive index. In the SL regime, the optical gain induces a distributed feedback (DFB) between the counterpropagating Bloch modes of the reference waveguide. The active waveguide is efficiently described by a scattering matrix [5], which accounts for the SL gain enhancement and gain-induced DFB. In particular, this effect reveals that SL semiconductor optical amplifiers may benefit from a smaller linewidth enhancement factor (LEF) [5], as they would experience a weaker backscattering. | |
| ISBN: | 978-1-6654-1876-8 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| CLEO2021-abstract.pdf | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri | |
| Gioannini-Rate.pdf | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2952612
Copyright © 2022