CUED Publications database

External-cavity mode-locked quantum-dot laser diodes for low repetition rate, sub-picosecond pulse generation

Xia, M and Thompson, MG and Penty, RV and White, IH (2011) External-cavity mode-locked quantum-dot laser diodes for low repetition rate, sub-picosecond pulse generation. IEEE Journal on Selected Topics in Quantum Electronics, 17. pp. 1272-1279. ISSN 1077-260X

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Abstract

This paper presents an investigation of the mode-locking performance of a two-section external-cavity mode-locked InGaAs quantum-dot laser diode, focusing on repetition rate, pulse duration and pulse energy. The lowest repetition rate to-date of any passively mode-locked semiconductor laser diode is demonstrated (310 MHz) and a restriction on the pulse energy (at 0.4 pJ) for the shortest pulse durations is identified. Fundamental mode-locking from 310 MHz to 1.1 GHz was investigated, and harmonic mode-locking was achieved up to a repetition rate of 4.4 GHz. Fourier transform limited subpicosecond pulse generation was realized through implementation of an intra-cavity glass etalon, and pulse durations from 930fs to 8.3ps were demonstrated for a repetition rate of 1 GHz. For all investigations, mode-locking with the shortest pulse durations yielded constant pulse energies of ∼0.4 pJ, revealing an independence of the pulse energy on all the mode-locking parameters investigated (cavity configuration, driving conditions, pulse duration, repetition rate, and output power). © 2011 IEEE.

Item Type: Article
Uncontrolled Keywords: Mode-locking optical pulse generation quantum-dot semiconductor lasers
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:22
Last Modified: 08 Dec 2014 02:33
DOI: 10.1109/JSTQE.2011.2123875