175 citations · 501 across the 23 of their papers we have counts for
13 papers · 1 filter
Linear time algorithm for phase sensitive holography
Peter J. Christopher, Ralf Mouthaan, Miguel El Guendy +1
Holographic search algorithms such as direct search and simulated annealing allow high-quality holograms to be generated at the expense of long execution times. This is due to sing…
Improving Holographic Search Algorithms using Sorted Pixel Selection
Peter J. Christopher, Jamie D. Lake, Daoming Dong +2
Traditional search algorithms for computer hologram generation such as Direct Search and Simulated Annealing offer some of the best hologram qualities at convergence when compared…
Relative limitations of increasing the number of modulation levels in computer generated holography
Peter J. Christopher, Timothy D. Wilkinson
Phase and amplitude spatial light modulators (SLMs) capable of both binary and multi-level modulation are widely available and offer a wide range of technologies to choose from for…
Novel Predictive Search Algorithm for Phase Holography
Peter J. Christopher, Youchao Wang, Timothy D. Wilkinson
We present a novel algorithm for generating high quality holograms for Computer Generated Holography - Holographic Predictive Search. This approach is presented as an alternative t…
Improving performance of single-pass real-time holographic projection
Peter J. Christopher, Ralf Mouthaan, Vamsee Bheemireddy +1
This work describes a novel approach to time-multiplexed holographic projection on binary phase devices. Unlike other time-multiplexed algorithms where each frame is the inverse tr…
Holographic Predictive Search: Extending the Scope
Peter J. Christopher, Ralf Mouthaan, George S. D. Gordon +1
Holographic Predictive Search (HPS) is a novel approach to search-based hologram generation that uses a mathematical understanding of the optical transforms to make informed optimi…
Sympathetic quantisation -- a new approach to hologram quantisation
Peter J. Christopher, Ralf Mouthaan, A. Mohamed Soliman +1
Spatial light modulators can typically only modulate the phase or the amplitude of an incident wavefront, with only a limited number of discrete values available. This is often acc…
HoloGen: An open source toolbox for high-speed hologram generation
Peter J. Christopher, Andrew Kadis, George S. D. Gordon +1
The rise of mixed reality systems such as Microsoft HoloLens has prompted an increase in interest in the fields of 2D and 3D holography. Already applied in fields including telecom…
Structure and Design of HoloGen
Peter J. Christopher, Timothy D. Wilkinson
Increasing popularity of augmented and mixed reality systems has seen a similar increase of interest in 2D and 3D computer generated holography (CGH). Unlike stereoscopic approache…
High-contrast imaging of 180° ferroelectric domains by optical microscopy using ferroelectric liquid crystals
Guillaume. F. Nataf, Mael Guennou, Giusy Scalia +3
Ferroelectric liquid crystals (FLCs) couple the direction of their spontaneous electric polarization to the direction of tilt of their optic axis. Consequently, reversal of the ele…
Benchmarking the Gerchberg-Saxton Algorithm
Peter J. Christopher, George S. D. Gordon, Timothy D. Wilkinson
Due to the proliferation of spatial light modulators, digital holography is finding wide-spread use in fields from augmented reality to medical imaging to additive manufacturing to…
Lookup tables for phase randomisation in hardware generated holograms
Peter J. Christopher, Timothy D. Wilkinson
The rise in virtual and mixed reality systems has prompted a resurgence of interest in two-dimensional and three-dimensional real-time computer generated holography. Phase randomis…
Automated laser induced damage threshold testing applied to a ferroelectric spatial light modulator
Peter J. Christopher, Nadeem Gabbani, William O'Neill +1
Laser Induced Damage Thresholds (LIDTs) are a measure of the level of fluence an optical component may be expected to handle without observable damage. In this work we present an a…