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Proceedings Paper • Open Access

Tunable focalizers: phase conjugate pairs
Author(s): Jorge Ojeda-Castañeda; Cristina M. Gómez-Sarabia

Paper Abstract

We discuss the use of pairs of optical masks for setting tunable optical focalizers and for implementing controllable absorption masks. For phase-only masks, one element of a given pair has a complex amplitude transmittance that is equal to the complex conjugate of the other element. For the absorption masks, we use a suitable attenuation offset. Then, from the attenuation offset value, one element has the opposite absorption profile that the other element. These methods are useful for generating varifocal lenses, governable prisms, tunable axicons, controllable axilenses, for tuning field depth, and for controlling Super Gaussian beams.

Paper Details

Date Published: 3 October 2019
PDF: 10 pages
Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112072L (3 October 2019); doi: 10.1117/12.2530686
Show Author Affiliations
Jorge Ojeda-Castañeda, Univ. of Guanajuato (Mexico)
Cristina M. Gómez-Sarabia, Univ. of Guanajuato (Mexico)

Published in SPIE Proceedings Vol. 11207:
Fourth International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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