Observation of Harmonic-Mode-Locking in a Mode-Locked InAs/InP-Based Quantum-Dash Laser With CW Optical Injection

Observation of Harmonic-Mode-Locking in a Mode-Locked InAs/InP-Based Quantum-Dash Laser With CW Optical Injection

We report tunable harmonic mode-locking in continuous-wave (CW) optically injected InAs/InP quantum-dash lasers emitting at 1.56 μm. The frequency of generated microwave pulses is twice the laser's self-mode-locked frequency. Autocorrelation traces show Gaussian pulses with low time-bandwidth p...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE photonics technology letters 2011-05, Vol.23 (9), p.549-551
Hauptverfasser: Sooudi, E, Huyet, G, McInerney, J G, Lelarge, F, Merghem, K, Martinez, A, Ramdane, A, Hegarty, S P
Format: Artikel
Sprache:eng
Schlagworte:
Laser mode locking
Masers
Microwave oscillators
mode-locked lasers
optical injection
Optical mixing
Optical pulses
quantum-dash lasers
Semiconductor lasers
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We report tunable harmonic mode-locking in continuous-wave (CW) optically injected InAs/InP quantum-dash lasers emitting at 1.56 μm. The frequency of generated microwave pulses is twice the laser's self-mode-locked frequency. Autocorrelation traces show Gaussian pulses with low time-bandwidth product ( ≈0.6). Mapping of the dynamics shows that this coherent microwave oscillation (MWO) region has maximum locking range ≈600 MHz (≈5 pm). Measurement of the optical linewidth of each individual mode at this regime shows strong narrowing relative to free running values by two orders of magnitude. The RF linewidth of the generated signal is ≈160 kHz confirming the coherence among the optical modes and low timing jitter.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2011.2114338