| EPSRC Reference: |
GR/N04102/01 |
| Title: |
OPTIMISATION OF MULTIPLE QUANTUM BARRIER REFLECTORS AND APPLICATION TO 630NM LASER DIODES |
| Principal Investigator: |
Blood, Professor P |
| Other Investigators: |
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| Project Partners: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
Cardiff University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2000 |
Ends: |
30 June 2003 |
Value (£): |
141,274
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| EPSRC Research Topic Classifications: |
| Materials Synthesis & Growth |
Optoelect. Devices & Circuits |
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Summary on Grant Application Form |
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Red emitting AlGaInP quantum well laser diodes have a wide range of applications spanning both professional and consumer markets. At the present time the shortest wavelength of most commercial services is 635nm, in practice 640nm, and is limited to low power. However, shorter wavelength lasers are required, particularly for data storage, and in the treatment of Cancer using the 630nm absorption and PDT drugs. The chief factor impending the manufacture of acceptable 630nm lasers is the thermally activated loss of electrons from the active region of the device, limiting power output and operating life. The use of multi-quantum barrier (MQB) reflectors, placed close to the active region in the laser, remains the only method devised to circumvent the problems of electron leakage based on current technology. However, this technique is far from optimised for AlGaInP based devices and required in an in depth investigation. Therefore, this multidisciplinary project combines the expertise of Swansea and Cardiff in the areas of MQB design, STM/STS studies of laser facets, device fabrication, characterisation and simulation in a novel approach to produce manufacturable and acceptable 630nm lasers. The programme is supported by EPI Ltd, PRP Opto and DIOMED.
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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 |
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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.cf.ac.uk |