Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.605923
Title: Phase optimised general error diffusion for diffractive optical component design
Author: Ramsey, Jamie L.
Awarding Body: University of Strathclyde
Current Institution: University of Strathclyde
Date of Award: 2013
Availability of Full Text:
Access from EThOS:
Access from Institution:
Abstract:
Algorithms for developing Diffractive Optical Elements (DOEs) are improved to achieve real time holograms capable of switching at rates of 25frames/second or greater. A Phase Optimised General Error Diffusion (POGED) algorithm optimised for quality and speed of generation of diffractive elements is the main contribution of the research. Compared to Simulated Annealing algorithms, a fourfold improvement in the speed of generation is achieved. The algorithm is further enhanced to operate in the Fresnel region with high diffraction efficiency and Signal-to-Noise Ratio (SNR). A number of different target reconstructions are simulated to determine validity and performance of the algorithm. Diffractive optical elements are fabricated to verify performance and a free space optical beam steering application is defined to further validate a DOE generated by POGED. The performance of the diffractive optical elements is proven through the design and characterisation of a free space optical interconnect amenable to harnessing the fast switching speeds of liquid crystal spatial light modulators.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.605923  DOI: Not available
Share: