Frequency comb generation by CW laser injection into a quantum-dot mode-locked laser

T.J. Pinkert, E.J. Salumbides, M.S. Tahvili, W. Ubachs, E.A.J.M. Bente, K.S.E. Eikema

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Samenvatting

We report on frequency comb generation at 1.5 µm by injection of a CW laser in a hybridly mode-locked InAs/InP two-section quantum-dot laser (HMLQDL). The generated comb has > 60 modes spaced by ~ 4.5 GHz and a -20 dBc width of > 100 GHz (23 modes) at > 30 dB signal to background ratio. Comb generation was observed with the CW laser (red) detuned more than 20 nm outside the HMLQDL spectrum, spanning a large part of the gain spectrum of the quantum dot material. It is shown that the generated comb is fully coherent with the injected CW laser and RF frequency used to drive the hybrid mode-locking. This method of comb generation is of interest for the creation of small and robust frequency combs for use in optical frequency metrology, high-frequency (> 100 GHz) RF generation and telecommunication applications.
Originele taal-2Engels
Pagina's (van-tot)21357-21371
Aantal pagina's15
TijdschriftOptics Express
Volume20
Nummer van het tijdschrift19
DOI's
StatusGepubliceerd - 2012

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