Photorefractives for fast optics

This thesis describes an experimental and theoretical study into the nonlinear optical<br/>properties of novel photorefractive materials and devices. The focus of the work is<br/>centred on bringing together the attractive attributes of inorganic and organic<br/>materials in a single hybrid device and to increase the photorefractive effect that is<br/>available from either material alone.<br/><br/>Consequently three novel photorefractive devices have been developed that are<br/>suitable for use as frequency agile optical filters and exhibit greater contrast ratios<br/>than previous passive photorefractive materials. Small signal gain co-efficients of up<br/>to 1600cm-1 are demonstrated in these hybrid devices, compared to less than 20cm-1<br/>in a single photorefractive window without any inorganic-organic hybridisation. The<br/>fundamental understanding in an inorganic photorefractive hybrid has also been<br/>advanced.

Name dc:type.qualificationname

Ph.D.

Level dc:type.qualificationlevel

doctoral

Grantor dc:publisher.institution

University of Southampton

Year dc:date.issued

2006

Author dc:creator

• Deer, Mathew John

Advisors dc:contributor.advisor

• Kaczmarek, Malgosia
• McEwan, Ken