Thesis
Phase optimised general error diffusion for diffractive optical component design
- Creator
- Rights statement
- Awarding institution
- University of Strathclyde
- Date of award
- 2013
- Thesis identifier
- T13631
- Qualification Level
- Qualification Name
- Department, School or Faculty
- 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.
- Resource Type
- DOI
- Date Created
- 2013
- Former identifier
- 1004499
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PDF of thesis T13631 | 2021-07-02 | Público | Baixar |