Holographic visualization, light beam formation, and speckle metrology with computer-generated holograms

The planned research within the project is in the field of holographic visualization, light beam shaping, and speckle metrology with computer-generated holograms.

The first work package is in the field of holographic visualization, with the work including  computer generation of input data for a holographic digital device for forming three-dimensional images and optimization of the three-dimensional holographic recording chain.

Synthesis of holographic three-dimensional data from incoherently captured images from different angles and synthesis of binary holograms are considered. Defects in holographic visualization from digitally recorded holograms will be investigated.

The second work package is the investigation of controllable formation of coherent light beams through the design of phase distributions for a spatial light modulator. 
The following will be generated: 
1) a Wollaston prism; 
2) an optical simulator of correlated dynamic speckle 
3) element for reproducing the optical behavior of a Fizeau wedge in reflection and transmission mode.

The third work package is in the field of dynamic speckle metrology by recording a series of time-varying speckle images on the surface of a diffusely reflecting object for non-contact observation of the rate of processes of industrial or biological nature.

The development includes methods for quantitative characterization of activity in tested samples by constructing a two-dimensional distribution of assessment. Approaches for reducing significant fluctuations of point-based intensity assessments are developed. A dynamic speckle is simulated based on the diffractive optical element developed in the second work package.

The last work package is aimed at creating a protocol for observing the drying process of azopolymer thin films through digital holographic recording and dynamic speckle analysis. 

The contract includes two stages, each lasting 18 months. The first stage has been reported with a high rating. Results from work under the Contract by the team from TU-Sofia have been presented at a high level with selection in specialized journals, particularly as leading publications. The total amount of the Contract is 120,000 BGN, of which 24,000 BGN is directly for TU-Sofia.