Programmable amplitude apodizers in liquid crystal spatial light modulators

We show the feasibility of two new programmable diffractive optical elements (DOE). On one hand, we demonstrate the realization of programmable apodizers. With the term apodizer we refer to non-uniform amplitude filters used to modify the point-spread function (PSF) of an optical system. On the othe...

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Publicado:	2001
Materias:	Amplitude apodized Fresnel lens Amplitude-only modulation Diffractive optical elements Fresnel lens Inherent equivalent apodizing effect Liquid crystal display Phase-only modulation Programmable apodizer Spatial light modulator Twisted nematic Amplitude modulation Light modulation Light modulators Liquid crystal displays Nematic liquid crystals Numerical methods Optical systems Optical transfer function Phase modulation Amplitude only modulation Inherent equivalent apodizing effects Phase only modulation Programmable amplitude apodizers Optical filters
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4457_n_p99_Campos http://hdl.handle.net/20.500.12110/paper_0277786X_v4457_n_p99_Campos
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0277786X_v4457_n_p99_Campos
record_format	dspace
spelling	paper:paper_0277786X_v4457_n_p99_Campos2023-06-08T15:26:15Z Programmable amplitude apodizers in liquid crystal spatial light modulators Amplitude apodized Fresnel lens Amplitude-only modulation Diffractive optical elements Fresnel lens Inherent equivalent apodizing effect Liquid crystal display Phase-only modulation Programmable apodizer Spatial light modulator Twisted nematic Amplitude modulation Light modulation Light modulators Liquid crystal displays Nematic liquid crystals Numerical methods Optical systems Optical transfer function Phase modulation Amplitude only modulation Fresnel lens Inherent equivalent apodizing effects Phase only modulation Programmable amplitude apodizers Twisted nematic Optical filters We show the feasibility of two new programmable diffractive optical elements (DOE). On one hand, we demonstrate the realization of programmable apodizers. With the term apodizer we refer to non-uniform amplitude filters used to modify the point-spread function (PSF) of an optical system. On the other hand, we show the simultaneous realization of a Fresnel lens and an amplitude filter in a single DOE: The programmable amplitude apodized Fresnel (PAAFL). Two different modulation regimes are required to generate these DOEs: amplitude-only regime for the programmable apodizer and phase-only regime for the PAAFL. We show that a twisted-nematic liquid crystal spatial light modulator (TN-LCSLM) inserted between two wave plates and two polarizers is able to provide both modulation regimes. Different types of amplitude filters, such as axial hyperresolving, transverse apodizing and transverse hyperresolving have been implemented both as programmable apodizers and as PAAFLs. We provide experimental results for the performance of the two new DOEs. The agreement with the numerical results is excellent, thus demonstrating the feasibility of our proposal. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4457_n_p99_Campos http://hdl.handle.net/20.500.12110/paper_0277786X_v4457_n_p99_Campos
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Amplitude apodized Fresnel lens Amplitude-only modulation Diffractive optical elements Fresnel lens Inherent equivalent apodizing effect Liquid crystal display Phase-only modulation Programmable apodizer Spatial light modulator Twisted nematic Amplitude modulation Light modulation Light modulators Liquid crystal displays Nematic liquid crystals Numerical methods Optical systems Optical transfer function Phase modulation Amplitude only modulation Fresnel lens Inherent equivalent apodizing effects Phase only modulation Programmable amplitude apodizers Twisted nematic Optical filters
spellingShingle	Amplitude apodized Fresnel lens Amplitude-only modulation Diffractive optical elements Fresnel lens Inherent equivalent apodizing effect Liquid crystal display Phase-only modulation Programmable apodizer Spatial light modulator Twisted nematic Amplitude modulation Light modulation Light modulators Liquid crystal displays Nematic liquid crystals Numerical methods Optical systems Optical transfer function Phase modulation Amplitude only modulation Fresnel lens Inherent equivalent apodizing effects Phase only modulation Programmable amplitude apodizers Twisted nematic Optical filters Programmable amplitude apodizers in liquid crystal spatial light modulators
topic_facet	Amplitude apodized Fresnel lens Amplitude-only modulation Diffractive optical elements Fresnel lens Inherent equivalent apodizing effect Liquid crystal display Phase-only modulation Programmable apodizer Spatial light modulator Twisted nematic Amplitude modulation Light modulation Light modulators Liquid crystal displays Nematic liquid crystals Numerical methods Optical systems Optical transfer function Phase modulation Amplitude only modulation Fresnel lens Inherent equivalent apodizing effects Phase only modulation Programmable amplitude apodizers Twisted nematic Optical filters
description	We show the feasibility of two new programmable diffractive optical elements (DOE). On one hand, we demonstrate the realization of programmable apodizers. With the term apodizer we refer to non-uniform amplitude filters used to modify the point-spread function (PSF) of an optical system. On the other hand, we show the simultaneous realization of a Fresnel lens and an amplitude filter in a single DOE: The programmable amplitude apodized Fresnel (PAAFL). Two different modulation regimes are required to generate these DOEs: amplitude-only regime for the programmable apodizer and phase-only regime for the PAAFL. We show that a twisted-nematic liquid crystal spatial light modulator (TN-LCSLM) inserted between two wave plates and two polarizers is able to provide both modulation regimes. Different types of amplitude filters, such as axial hyperresolving, transverse apodizing and transverse hyperresolving have been implemented both as programmable apodizers and as PAAFLs. We provide experimental results for the performance of the two new DOEs. The agreement with the numerical results is excellent, thus demonstrating the feasibility of our proposal.
title	Programmable amplitude apodizers in liquid crystal spatial light modulators
title_short	Programmable amplitude apodizers in liquid crystal spatial light modulators
title_full	Programmable amplitude apodizers in liquid crystal spatial light modulators
title_fullStr	Programmable amplitude apodizers in liquid crystal spatial light modulators
title_full_unstemmed	Programmable amplitude apodizers in liquid crystal spatial light modulators
title_sort	programmable amplitude apodizers in liquid crystal spatial light modulators
publishDate	2001
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4457_n_p99_Campos http://hdl.handle.net/20.500.12110/paper_0277786X_v4457_n_p99_Campos
_version_	1768544271971909632

Programmable amplitude apodizers in liquid crystal spatial light modulators

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