| EPSRC Reference: |
GR/L05419/01 |
| Title: |
A DOMA IN INVERTED ACOUSTIC TRANSDUCER TECHNOLOGY FOR ADVANCED ACOUSTO-OPTIC DEVICES |
| Principal Investigator: |
Pannell, Professor C |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Physical Sciences |
| Organisation: |
University of Kent |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 1997 |
Ends: |
31 March 2000 |
Value (£): |
148,912
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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Summary on Grant Application Form |
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At present, planar lithium niobate acoustic transducers use din the acousto-optics industry emit plane acoustic waves. This severely limits the performance of the resulting Bragg cells, deflectors and tunable filters. We propose to investigate the use of domain inverted patterns in piezoelectric transducers to synthesise complex acoustic wave field sin crystals and so allow construction of ultra-high performance acousto-optic devices which we cannot build using existing technology. Acoustic waves from adjacent domain inverted regions are 180 degrees out of phase allowing the construction of 'Fresnel zone sources'. The ability to control the focusing in two transverse directions, to apodise the beams with the same technique while still using planar transducers, is a revolutionary step. We intend constructing domain reversal equipment and a Schlieren camera system for visualisation of acoustic fields, together with a number of high-performance acousto optic components to demonstrate the technique. I order to realise the full potential of these devices, we will research into
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
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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.kent.ac.uk |