We report on a significant reduction of both the radiofrequency beat note line width at 40.7 GHz and the integrated relative intensity noise of a 1 mm long edge-emitting monolithic Fabry–Perot InAs/InGaAs quantum dot semiconductor laser emitting from the ground state at 1250 nm by injection current control. For increasing injection currents, first an unlocked multi-mode behavior is observed and then, at a certain current above lasing threshold, self-locking of the longitudinal modes due to the internal non-linear effects occurs yielding a beat line width of 20 kHz (−3 dB) in contrast to tens of megahertz for lower injection currents. These results are confirmed by simulations.

Threshold behaviour of optical frequency comb self-generation in an InAs/InGaAs quantum dot laser / Weber, Christoph; Columbo, Lorenzo L.; Gioannini, Mariangela; Breuer, Stefan; Bardella, Paolo. - In: OPTICS LETTERS. - ISSN 1539-4794. - ELETTRONICO. - 44:14(2019), pp. 3478-3481. [10.1364/OL.44.003478]

Threshold behaviour of optical frequency comb self-generation in an InAs/InGaAs quantum dot laser

Lorenzo L. Columbo;Mariangela Gioannini;Paolo Bardella
2019

Abstract

We report on a significant reduction of both the radiofrequency beat note line width at 40.7 GHz and the integrated relative intensity noise of a 1 mm long edge-emitting monolithic Fabry–Perot InAs/InGaAs quantum dot semiconductor laser emitting from the ground state at 1250 nm by injection current control. For increasing injection currents, first an unlocked multi-mode behavior is observed and then, at a certain current above lasing threshold, self-locking of the longitudinal modes due to the internal non-linear effects occurs yielding a beat line width of 20 kHz (−3 dB) in contrast to tens of megahertz for lower injection currents. These results are confirmed by simulations.
File in questo prodotto:
File Dimensione Formato  
2019_Threshold behavior of optical frequency comb.pdf

non disponibili

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.59 MB
Formato Adobe PDF
1.59 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
QD___1250___SML___FR_I_LW___RIN_I_Sim___Exp.pdf

accesso aperto

Descrizione: Articolo principale
Tipologia: 1. Preprint / submitted version [pre- review]
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 657.04 kB
Formato Adobe PDF
657.04 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2742981