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

A. Márquez; C. Iemmi; J. C. Escalera; J. Campos; S. Ledesma; J. Davis; M. Yzuel

doi:https://doi.org/10.1117/12.437073

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

A. Márquez, C. Iemmi, J. C. Escalera, J. Campos, S. Ledesma, J. Davis, M. Yzuel

Research output: Contribution to journal › Article › Research › peer-review

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 SLM (TN-LCSLM) 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 (PSF) 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 hyperresolving AAFL are implemented. The excellent quantitative agreement between experimental and numerical results shows the feasibility of AAFLs on a phase-only SLM. © 2001 SPIE · 0277-786X/01/$15.00.

Original language	English
Pages (from-to)	692-695
Journal	Proceedings of SPIE-The International Society for Optical Engineering
Volume	4419
DOIs	https://doi.org/10.1117/12.437073
Publication status	Published - 1 Jan 2001

Keywords

Diffractive optical elements
Fresnel lens
Phase-only modulation
Programmable apodizer
Twisted nematic spatial light modulator

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title = "Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial fight modulators",

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 SLM (TN-LCSLM) 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 (PSF) 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 hyperresolving AAFL are implemented. The excellent quantitative agreement between experimental and numerical results shows the feasibility of AAFLs on a phase-only SLM. {\textcopyright} 2001 SPIE · 0277-786X/01/$15.00.",

keywords = "Diffractive optical elements, Fresnel lens, Phase-only modulation, Programmable apodizer, Twisted nematic spatial light modulator",

author = "A. M{\'a}rquez and C. Iemmi and Escalera, {J. C.} and J. Campos and S. Ledesma and J. Davis and M. Yzuel",

year = "2001",

month = jan,

day = "1",

doi = "https://doi.org/10.1117/12.437073",

language = "English",

volume = "4419",

pages = "692--695",

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Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial fight modulators. / Márquez, A.; Iemmi, C.; Escalera, J. C.; Campos, J.; Ledesma, S.; Davis, J.; Yzuel, M.

In: Proceedings of SPIE-The International Society for Optical Engineering, Vol. 4419, 01.01.2001, p. 692-695.

Research output: Contribution to journal › Article › Research › peer-review

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T1 - Simultaneous encoding of amplitude apodizers and Fresnel lenses in spatial fight modulators

AU - Márquez, A.

AU - Iemmi, C.

AU - Escalera, J. C.

AU - Campos, J.

AU - Ledesma, S.

AU - Davis, J.

AU - Yzuel, M.

PY - 2001/1/1

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AB - 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 SLM (TN-LCSLM) 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 (PSF) 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 hyperresolving AAFL are implemented. The excellent quantitative agreement between experimental and numerical results shows the feasibility of AAFLs on a phase-only SLM. © 2001 SPIE · 0277-786X/01/$15.00.

KW - Diffractive optical elements

KW - Fresnel lens

KW - Phase-only modulation

KW - Programmable apodizer

KW - Twisted nematic spatial light modulator

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