Mode-locking and frequency mixing at THz pulse repetition rates in a sampled-grating DBR mode-locked laser

Hou, L. , Haji, M. and Marsh, J. H. (2014) Mode-locking and frequency mixing at THz pulse repetition rates in a sampled-grating DBR mode-locked laser. Optics Express, 22(18), pp. 21690-21700. (doi: 10.1364/OE.22.021690)

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Publisher's URL: http://dx.doi.org/10.1364/OE.22.021690

Abstract

We report a sampled grating distributed Bragg reflector (SGDBR) laser with two different gratings which mode-lock independently at respective pulse repetition frequencies of 640 and 700 GHz. The device operates in distinct regimes depending on the bias conditions, with stable pulse trains observed at 640 GHz, 700 GHz, the mean repetition frequency of 666 GHz, and the sum frequency of 1.34 THz (due to nonlinear mixing). Performance is consistent and highly reproducible with exceptional stability observed over wide ranges of drive bias conditions. Furthermore, a monolithically integrated semiconductor optical amplifier is used to amplify the pulse trains, providing an average output power of 46 mW at 666 GHz.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Marsh, Professor John and Hou, Dr Lianping and Haji, Dr Mohsin
Authors: Hou, L., Haji, M., and Marsh, J. H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN:1094-4087
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Optics Express 22(15):21690-21700
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
453111High power, high frequency mode-locked semiconductor lasersAnn BryceEngineering & Physical Sciences Research Council (EPSRC)EP/E065112/1ENG - ENGINEERING ELECTRONICS & NANO ENG