| EPSRC Reference: |
GR/L10130/01 |
| Title: |
PHOTOREFRACTIVE DAMAGE STUDIES IN PERIODICALLY POLED MATERIALS AND WAVEGUIDES |
| Principal Investigator: |
Eason, Professor RW |
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| Department: |
Sch of Physics and Astronomy |
| Organisation: |
University of Southampton |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
08 March 1996 |
Ends: |
07 March 1997 |
Value (£): |
13,000
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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Summary on Grant Application Form |
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1. Photorefraction has attracted much interest from numerous research groups during the past fifteen years. Whether it is beneficial or a nuisance depends on your goals, but in the case of periodically poled materials for quasi-phase-matching, photorefraction is undeniably a disadvantage. We intend to investigate why it is that materials that normally do not show photoreractive damage suddenly become susceptible to it once the material has periodic inversion of its c-axis direction. The work will be predominantly experimental, with associated computer modelling. Professor Feinberg is one of the worlds experts on photorefractive modelling and devices, and he will also bring to us his new optical technique (Science, Dec 22, 1995) for monitoring c-axis inversion in these materials.2. In wavelength devices, the power requirement for achieving efficient nonlinear behaviour is much reduced due to mode confinement. In materials such as LiNbO3 doped with Nd, lasing in the waveguide has recently been demonstrated. Unfortunately, photorefractive damage sets in at these high intensities. We intend to pursue studies of photorefractive compensation behaviour at high intensities in an attempt to eliminate photorefractive damage in these materials.
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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.soton.ac.uk |