Machado-Olivares, Federico Jose; Ferrando Martín, Vicente; Gimenez Palomares, Fernando; Furlan, Walter D.; Monsoriu Serra, Juan Antonio(The Optical Society, 2018)
[EN] A radial Walsh filter is a phase binary diffractive optical element characterized by a set of concentric rings that take the phase values 0 or ¿, corresponding to the values + 1 or ¿1 of a given radial Walsh function. ...
Machado-Olivares, Federico Jose; Zagrajek, Przemyslaw; Monsoriu Serra, Juan Antonio; Furlan, Walter D.(Institute of Electrical and Electronics Engineers, 2018)
[EN] Imaging at terahertz (THz) frequencies offers a great potential for applications including security screening, telecommunications biodetection, and spectroscopy. Some of these applications need specially designed ...