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Proceedings Paper

Spatial light modulators with large phase-modulation: application to encode lenses with very short focal lengths
Author(s): Jeffrey A. Davis; Benjamin K. Gutierrez; Ignacio Moreno; Don M. Cottrell
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Paper Abstract

In standard phase spatial light modulators (SLM), showing a phase modulation of 2π radians, there is a limit to the shortest focal length of an encoded lens. This Nyquist focal length limit is caused by the aliasing originated by the SLM pixelated structure. In this work we show that SLMs with very large phase modulation (in our case about five cycles of 2π radians) can be used to surpass this effect and efficiently encode lenses with focal lengths much lower than the Nyquist limit. We include experimental results showing that this limit is reduced by a factor of about 1/10.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11304, Advances in Display Technologies X, 113040C (26 February 2020); doi: 10.1117/12.2545588
Show Author Affiliations
Jeffrey A. Davis, San Diego State Univ. (United States)
Benjamin K. Gutierrez, San Diego State Univ. (United States)
Ignacio Moreno, Univ. Miguel Hernández de Elche (Spain)
Don M. Cottrell, San Diego State Univ. (United States)


Published in SPIE Proceedings Vol. 11304:
Advances in Display Technologies X
Jiun-Haw Lee; Qiong-Hua Wang; Tae-Hoon Yoon, Editor(s)

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