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Photonics 2015, 2(2), 719-744; doi:10.3390/photonics2020719

Unlocking Spectral Versatility from Broadly−Tunable Quantum−Dot Lasers

School of Engineering, Physics and Mathematics, University of Dundee, Nethergate, Dundee DD1 4HN, UK
These authors contributed equally to this work.
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Received: 21 May 2015 / Revised: 15 June 2015 / Accepted: 16 June 2015 / Published: 22 June 2015
(This article belongs to the Special Issue Quantum Dot Based Lasers and Photonic Devices)
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Abstract

Wavelength−tunable semiconductor quantum−dot lasers have achieved impressive performance in terms of high−power, broad tunability, low threshold current, as well as broadly tunable generation of ultrashort pulses. InAs/GaAs quantum−dot−based lasers in particular have demonstrated significant versatility and promise for a range of applications in many areas such as biological imaging, optical fiber communications, spectroscopy, THz radiation generation and frequency doubling into the visible region. In this review, we cover the progress made towards the development of broadly−tunable quantum−dot edge−emitting lasers, particularly in the spectral region between 1.0–1.3 µm. This review discusses the strategies developed towards achieving lower threshold current, extending the tunability range and scaling the output power, covering achievements in both continuous wave and mode−locked InAs/GaAs quantum−dot lasers. We also highlight a number of applications which have benefitted from these advances, as well as emerging new directions for further development of broadly−tunable quantum−dot lasers. View Full-Text
Keywords: lasers; tunable; quantum dots lasers; tunable; quantum dots
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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White, S.E.; Cataluna, M.A. Unlocking Spectral Versatility from Broadly−Tunable Quantum−Dot Lasers. Photonics 2015, 2, 719-744.

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