| EPSRC Reference: |
GR/S47373/01 |
| Title: |
Light-induced domain engineering in ferroclectrics: a route to sub-micron poling |
| Principal Investigator: |
Eason, Professor RW |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Optoelectronics Research Ctr (closed) |
| Organisation: |
University of Southampton |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 2003 |
Ends: |
30 September 2004 |
Value (£): |
152,050
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Processing |
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| EPSRC Industrial Sector Classifications: |
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| Panel History: |
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Summary on Grant Application Form |
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Recent experimental work within the ORC has shown that structures can be created in ferroelectric host materials such as LiNb03 that demonstrates the characteristics associated with domain inversion. These structures are formed via the interaction of UV light (c.w. at 244nm: pulsed at 248 sufficiently high irradiance to locally influence properties such as Li content via localised thermal diffusion, photovoltaic and pyroelectric fields sub-pm absorption depths at these wavelengths, and the possibility of defect involvement in such congruently grown host material. All mechanisms are individually capable of inducing localised domain inversion. The proposal investigates this light induced phenomenon, and se establish the unique role that incident illumination can have in fabrication of domain patterns. The programme builds on the early material s studies to fabricate the 'holy grail' in such domain manipulated ferroelectrics: the fabrication of precision periodic structures with pm to s periodicities for applications in electro-optic Bragg gratings, quasi-phase-matched devices and tuneable photonic crystal structures.
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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 |