{"id":{"repo_id":"strathclyde","oai_identifier":"oai:strathclyde:ft848q626"},"canonical_url":"https://search.dev.ndltd.org/etd/strathclyde/oai:strathclyde:ft848q626","repository":{"repo_id":"strathclyde","name":"University of Strathclyde","base_url":"https://stax.strath.ac.uk/catalog/oai"},"display":{"title":"Phase optimised general error diffusion for diffractive optical component design","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.","abstract_html":"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.","abstract_has_math":false,"creators":["Ramsey, Jamie L."],"institution":"University of Strathclyde","degree_name":"phd","degree_level":"doctoral-pg","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013","date_published":"2013","updated_at":"2026-07-24T04:49:19Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/mf1a-q151"],"render_values":[{"text":"10.48730/mf1a-q151","href":"https://doi.org/10.48730/mf1a-q151","code":true}]},{"key":"dc:identifier","label":"Identifier","values":["T13631"],"render_values":[{"text":"T13631","href":null,"code":true}]}]},"links":{"outbound_url":"https://stax.strath.ac.uk/concern/theses/ft848q626","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Ramsey, Jamie L."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013"]},{"key":"dc:date.issued","label":"Date","values":["2013"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Electronic and Electrical Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Strathclyde"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral-pg"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["phd"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["T13631"]},{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/mf1a-q151"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://stax.strath.ac.uk/concern/theses/ft848q626"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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."]},{"key":"dc:description.abstract","label":"Abstract","values":["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."]},{"key":"dc:title","label":"Title","values":["Phase optimised general error diffusion for diffractive optical component design"]}]}],"canonical_facts":{"dc:creator":["Ramsey, Jamie L."],"dc:date":["2013"],"dc:date.issued":["2013"],"dc:description":["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."],"dc:description.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."],"dc:identifier":["T13631"],"dc:identifier.doi":["10.48730/mf1a-q151"],"dc:identifier.uri":["https://stax.strath.ac.uk/concern/theses/ft848q626"],"dc:publisher.department":["Department of Electronic and Electrical Engineering"],"dc:publisher.institution":["University of Strathclyde"],"dc:title":["Phase optimised general error diffusion for diffractive optical component design"],"dc:type.qualificationlevel":["doctoral-pg"],"dc:type.qualificationname":["phd"]},"updated_at":"2026-07-24T04:49:19Z"}