Sub-Terahertz Computer Generated Hologram with Two Image Planes
Source abstract
Abstract
An advanced optical structure such as a synthetic hologram (also called a computer-generated hologram) is designed for sub-terahertz radiation. The detailed design process is carried out using the ping-pong method, which is based on the modified iterative Gerchberg–Saxton algorithm. The novelty lies in designing and manufacturing a single hologram structure creating two different images at two distances. The hologram area is small in relation to the wavelength used (the largest hologram dimension is equivalent to around 57 wavelengths). Thus, it consists of a small amount of coded information, but despite this fact, the reconstruction is successful. Moreover, one of the reconstructed images is larger than the hologram area. Good accordance between numerical simulations and experimental evaluation was obtained.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Terahertz technology and applications · Metamaterials and Metasurfaces Applications · Advanced Optical Imaging Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Physics, Warsaw University of Technology, 75 Koszykowa, 00-662 Warsaw, Poland
Institute of Optoelectronics, Military University of Technology, 2 gen. Urbanowicza, 00-908 Warsaw, Poland
Funding
Narodowe Centrum Badań i Rozwoju
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Show source-provided references
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