Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial light modulators

Andres Marquez; Claudio C. Iemmi; Juan C. Escalera; Juan Campos; Silvia A. Ledesma; Jeffrey A. Davis; Maria Josefa Yzuel

doi:10.1117/12.437073

14 August 2001 Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial light modulators

Andres Marquez, Claudio C. Iemmi, Juan C. Escalera, Juan Campos, Silvia A. Ledesma, Jeffrey A. Davis, Maria Josefa Yzuel

Author Affiliations +

Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437073
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina

Abstract

In this paper we show a technique to simultaneously encode a Fresnel lens and an amplitude filter in a single diffractive optical element (DOE) displayed on a spatial light modulator (SLM). IN particular we have displayed this new DOE, which we call amplitude apodized Fresnel lens (AAFL), on a twisted nematic liquid-crystal working in the phase-only regime. The programmability of the AAFL permits to change dynamically its focal length and its action on the point-spread function of an optical system. We provide a method to encode the complex amplitude information of the AAFL on a phase-only function. We also demonstrate how to compensate for the inherent equivalent apodizing effect due to the pixelated structure of SLMs. Different types of AAFLs, such as transverse apodizing AAFL and transverse hyper resolving AAFL are implemented. The excellent quantitative agreement between experimental and numerical results shows the feasibility of AAFLs on a phase-only SLM.

Citation Download Citation

Andres Marquez, Claudio C. Iemmi, Juan C. Escalera, Juan Campos, Silvia A. Ledesma, Jeffrey A. Davis, and Maria Josefa Yzuel "Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial light modulators", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); https://doi.org/10.1117/12.437073

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