| EPSRC Reference: |
GR/S24251/01 |
| Title: |
Ultrafast Phase Coherence and Spin Relaxation in Wide Gap Nitride Quantum Wells |
| Principal Investigator: |
Wells, Dr JP |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
First Grant Scheme Pre-FEC |
| Starts: |
01 August 2003 |
Ends: |
31 July 2006 |
Value (£): |
114,585
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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| Panel History: |
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Summary on Grant Application Form |
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A programme of research aimed at understanding exciton and carrier dephasing as well as spin relaxation in InGaN/GaN quantum wells is proposed. Femtosecond photon echo spectroscopy will be used to explore exciton and carrier phase coherence at a variety of optical densities up to the stimulated emission regime where carrier-carrier scattering becomes significant. Using a circularly polarised pump and probe technique, spin relaxation will be investigated to determine the predominant decay processes. Despite the fact that this project deals with fundamental physical phenomena there are considerable implications for device development, in particular the advancement of visible to UV photodetectors and lasers based around wide gap nitrides. In order to implement these investigations a decidated and permanent experimental rig is to be established in order to pursue deep blue / UV, photon echo and pump-probe experi ments utilising the necessary combinations of linear and circularly polarised femtosecond light pulses provided by a regeneratively amplified 130 fs Ti-Sapphire laser.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.shef.ac.uk |