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Quantum well devices for mode-locking fibre lasers

Atkinson, D., Loh, W.H., Hopkinson, M., Grey, R., Seeds, A.J., Morkel, P.R. and Payne, D.N. (1993) Quantum well devices for mode-locking fibre lasers At IEE Colloquium on Applications of Quantum Well Technologies, United Kingdom.

Record type: Conference or Workshop Item (Paper)


The generation of picosecond duration pulses in the 1.55 micron wavelength region is of considerable interest for applications related to telecommunications. In the 1.06 micron region, picosecond pulses are useful for spectroscopy and the electro-optic sampling of high speed integrated circuits [I]. Passive mode-locking of fibre lasers using multiple quantum well (MQW) material can provide optical pulses with picosecond durations in both these wavelength regions. The optical confinement and long lengths available, give doped fibre lasers high gain together with flexibility in physical configuration. The use of QWs with light incident perpendicular to the epitaxial layers, as passive saturable absorbers to mode-lock these lasers, is attractive because of their polarisation insensitivity and the wide range of wavelengths available. The semiconductor sample operating wavelength is governed by the materials, their compositions and dimensions used. In fibre, gain is provided in the 1.55 micron region by doping with Erbium whilst Neodymium is used for operation in the 1.06 micron region.
By integrating the saturable absorber and laser-cavity end mirror into a single semiconductor device we have generated picosecond pulses in very simple cavity configurations.

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e-pub ahead of print date: 5 March 1993
Venue - Dates: IEE Colloquium on Applications of Quantum Well Technologies, United Kingdom, 1993-03-05


Local EPrints ID: 77229
PURE UUID: 5aee7138-89f0-4335-9ba9-b1f119c3198e

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:33

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Author: D. Atkinson
Author: W.H. Loh
Author: M. Hopkinson
Author: R. Grey
Author: A.J. Seeds
Author: P.R. Morkel
Author: D.N. Payne

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