Recent progress in distributed feedback InGaN/GaN laser diodes

Slight, T. J. et al. (2019) Recent progress in distributed feedback InGaN/GaN laser diodes. In: Novel In-Plane Semiconductor Lasers XVIII, San Francisco, CA, USA, 02-07 Feb 2019, 109390I. ISBN 9781510625204 (doi: 10.1117/12.2507630)

203903.pdf - Published Version



Laser diodes based on Gallium Nitride (GaN) are useful devices in a wide range of applications including atomic spectroscopy, data storage and optical communications. To fully exploit some of these application areas there is a need for a GaN laser diode with high spectral purity, e.g. in atomic clocks, where a narrow linewidth blue laser source can be used to target the atomic cooling transition. We report on the continuous wave, room temperature operation of a distributed feedback laser diode (DFB-LD) with high-order notched gratings. The design, fabrication and characterization of DFB devices based on the (Al,In) GaN material system is described. A single peak emission at 408.6 nm with an optical power of 20 mW at 225 mA and a side mode suppression ratio (SMSR) of 35 dB was achieved. Additionally, we demonstrate the use of a GaN DFB-LD as a transmitter in visible optical communications system. We also present results from a DFB-LD optimized for laser cooling of Sr+.

Item Type:Conference Proceedings
Additional Information:This research has been supported by the European Union with grant E10509, Innovate UK through grant 132543, and by the National Centre for Research and Development (E10509/29/NCBR/2017 and 1/POLBER- 3/2018 and project NCN-2013/11/B/ST3/04263).
Glasgow Author(s) Enlighten ID:Haji, Dr Mohsin and Kelly, Professor Anthony and Viola, Mr Shaun and Watson, Dr Scott and Gwyn, Mr Steffan
Authors: Slight, T. J., Watson, S., Viola, S., Yadav, A., Stanczyk, S., Grzanka, S., Gwyn, S., Rafailov, E., Perlin, P., Najda, S. P., Leszczyński, M., Haji, M., and Kelly, A. E.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Copyright Holders:Copyright © 2019 SPIE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
174106Coolblue - 132543Anthony KellyEngineering and Physical Sciences Research Council (EPSRC)EP/R001774/1ENG - Electronics & Nanoscale Engineering