| EPSRC Reference: |
GR/R37128/01 |
| Title: |
Circular Grating DFB Organic Semiconductor Lasers |
| Principal Investigator: |
Shore, Professor A |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Electronics |
| Organisation: |
Bangor University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 June 2001 |
Ends: |
30 November 2003 |
Value (£): |
120,322
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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| EPSRC Industrial Sector Classifications: |
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Summary on Grant Application Form |
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The aim of this collaborative project is to design, fabricate and characterise organic laser diodes where circular distributed feedback gratings are utilised to enhance laser operation. Particular attention will be given to surface Imprinted circular grating structures. Experimental work in the project will be directed at a proof-of-principle demonstration of optically pumped circular DFB organic semiconductor laser ( CDOSL) operation and performance optimisation. Design work will be undertaken to identify circular grating structures which provide low optical pumping thresholds as a means for the practical implementation of CDOSLs. The target structure must provide high reflectivity at the lasing wavelength and also enable efficient coupling of the pump optical power. Realising this aim will involve the calculation of optical pump thresholds for single and double periodic gratings where consideration will be given to the characteristics of both disc and annular grating structures and giving attention to the influence of the grating profile on threshold optical pump power. Circular grating fabrication will be undertaken using surface embossing. This approach allows the production of surface features having a non-rectangular cross section on small scales and will be used to test the efficiency of a number of candidate grating profiles. Optical pumping will be used to test the efficiency of lasing action in fabricated structures. In the final stage of the project effort will be directed at optimising device operation paying particular attention to a detailed determination of the optical and thermal properties of fabricated devices. The material and device performance parameters obtained in this way will be used to inform the design of electrically pumped organic semiconductor lasers.
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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.bangor.ac.uk |