Skip to main content
LOGO(small) - Queen's University Belfast
  • Our facebook
  • Our twitter
  • Our
  • Our
SEARCH SEARCH
LOGO(large) - Queen's University Belfast

School of

Mathematics and Physics

  • Home
  • Study
    • Undergraduate Maths
    • Undergraduate Physics
    • Postgraduate Taught
    • Postgraduate Research
    • International
    • Student Handbook
    • Visiting Students
  • Research
    • Research Centres
    • Our researchers
    • Find a PhD Supervisor
    • PhD Research Students
  • International
  • Business / Careers
  • Discover
    • About the School
    • Gender Equality
    • Outreach
    • Green Impact
    • Safe Harbour Scheme
  • Connect
    • Staff
    • Get in touch
  • News
    • News Archive
  • Events
  • Home
  • Study
    • Undergraduate Maths
    • Undergraduate Physics
    • Postgraduate Taught
    • Postgraduate Research
    • International
    • Student Handbook
    • Visiting Students
  • Research
    • Research Centres
    • Our researchers
    • Find a PhD Supervisor
    • PhD Research Students
  • International
  • Business / Careers
  • Discover
    • About the School
    • Gender Equality
    • Outreach
    • Green Impact
    • Safe Harbour Scheme
  • Connect
    • Staff
    • Get in touch
  • News
    • News Archive
  • Events
  • Our facebook
  • Our twitter
  • Our
  • Home
  • School of Mathematics and Physics
  • Research
  • PhD Research Students
  • Nicholas Stephen - Student Profile

Nicholas Stephen - Student Profile

PhD student profile photo

Nicholas Stephen

Current Research Project:

Investigating GaAs metamorphic lasers

Metamorphic growth is a technique where a virtual buffer layer is grown on a substrate such as GaAs.  The lattice constant of the buffer layer can be chosen, which enables the growth of the laser heterostructure that can be tuned to different applications including telecommunication. This project in collaboration with the Tyndall National Institute in Cork is investigating serval different metamorphic lasers grown by metalorganic vapour phase epitaxy, MOVPE. Using techniques such as Transmission Electron Microscopy, TEM, and Energy Dispersive X-ray Spectroscopy, EDX, the aim of the project is to investigate the internal structure of the lasers further to find out information. This involves analysis on defects, strain, chemical composition and morphonology. The information will help to optimise the manufacture process with the aim of producing a laser that is viable for commercial telecommunication applications.

Biography

Nicholas joined the EPSRC Centre for Doctoral Training in Photonic Integration and Advanced Data Storage programme in September 2019 having previously graduated with a BSc Honours in Chemistry and MSc in Biostatistics, both from the University of Glasgow. He is currently in the second year of the programme having completed the taught training year and started the PhD project in June 2020. His research mainly focuses on using electron microscopy techniques for investigating GaAs metamorphic lasers grown in collaboration with the Tyndall National Institute.

Research interest

  • Transmission Electron Microscopy
  • Metamorphic lasers
  • GaAs
  • Material science

 

In This Section
PhD Research Students
  • PhD Research Students
  • Pablo Galán de Anta - Student Profile
  • Kerem Osman Çubuk - Student Profile
  • Fionntán Callan - Student Profile
  • Ryan Campbell - Student Profile
  • Christopher Dillon - Student Profile
  • Caitlin Gilchrist-Millar - Student Profile
  • Dominik Kiersz - Student Profile
  • Conor MacBride - Student Profile
  • Christopher McCooey - Student Profile
  • Stephanie Merritt - Student Profile
  • Sean Quinn - Student Profile
  • James Edward Robinson - Student Profile
  • Richard Smith - Student Profile
  • Jamie Wilson - Student Profile
  • Javier Fernández Troncoso - Student Profile
  • Musharei Abdullal A Alanazi - Student Profile
  • Suhail Albakheet - Student Profile
  • Asmaa Mohammad S Ali - Student Profile
  • Matthew Charlwood - Student Profile
  • Benjamin Greenwood - Student Profile
  • Fayza Adel Hanafy Hassan - Student Profile
  • Cormac Hyland - Student Profile
  • Sinéad A. Mannion - Student Profile
  • Orla McCusker - Student Profile
  • Jyotirup Sarma - Student Profile
  • Rachel E. Smith - Student Profile
  • Andrew Conroy - Student Profile
  • Jaroslav Hofierka - Student Profile
  • Heather Leitch - Student Profile
  • Peter McConnell - Student Profile
  • Luke Roantree - Student Profile
  • Gareth Boreland - Student Profile
  • Melanie Campell - Student Profile
  • Karys Dickson - Student Profile
  • Ethan Hawthorne - Student Profile
  • Nathan Kirk - Student Profile
  • Michael Rosbotham - Student Profile
  • Niall Taggart - Student Profile
  • Tasha Montgomery - Student Profile
  • Dulan Samuditha Dias - Student Profile
  • Lauren Connell- Student Profile
  • Hristo Gergov- Student Profile
  • Hugh Littlehailes- Student Profile
  • Josua Lo- Student Profile
  • Pierre Maidment- Student Profile
  • James McCartan- Student Profile
  • Simon Munro- Student Profile
  • Anthony Murphy- Student Profile
  • Tamsin Isabel O’Reilly - Student Profile
  • Frederic Rendell-Bhatti- Student Profile
  • Sarah Ruddell- Student Profile
  • Tiernan McCaughery - Student Profile
  • Donal O’Cofaigh - Student Profile
  • Emel Yavuz - Student Profile
  • Jeremy Rigney - Student Profile
  • Carla McDonnell - Student Profile
  • Conor McCluskey - Student Profile
  • Jesi Maguire - Student Profile
  • John J. Scott - Student Profile
  • Jack Cassidy - Student Profile
  • Matthew McCollum - Student Profile
  • Lynda Hutcheson - Student Profile
  • Conor McAnespie - Student Profile
  • Shaun McLaughlin - Student Profile
  • Conor Fegan - Student Profile
  • Nicholas Stephen - Student Profile
  • Colm Fitzpatrick - Student Profile
  • Sean McCallum - Student Profile
  • Sam Shepherd - Student Profile
  • David Jackson - Student Profile
  • Sheron Blair - Student Profile
  • Peter Read - Student Profile
  • Laura Buchanan - Student Profile
  • Qiongyuan Wu - Student Profile
  • Aaron Monson - Student Profile
  • Tamsin O'Reilly - Student Profile
  • Jarod Gouldie - Student Profile
  • Jonathan Henderson - Student Profile
  • Chloe Ho - Student Profile
  • Matthew Dobson - Student Profile
  • Orla Surgeoner - Student Profile
  • Brendan Loughran - Student Profile
  • Ahmet Suna - Student Profile
  • Jonathan Kennedy - Student Profile
Queen's University Belfast - Logo (small)
Contact Us

School of Mathematics and Physics

Main Physics Building
University Road
Belfast
BT7 1NN

GET DIRECTIONS

General School Enquiries:

E-mail: mp@qub.ac.uk

Telephone: +44 (0)28 9097 1386/5293

Quick Links

  • Home
  • Study
  • Careers
  • Research

 

© Queen's University Belfast 2021
Legal
Accessibility Statement
Privacy and Cookies
Modern Slavery Statement