Super-Resolution Digital Holographic Microscopy for Three Dimensional Sample Using Multipoint Light Source Illumination

Phan, Anh-Hoang; Park, Jae‐Hyeung; Kim, Nam

doi:10.1143/jjap.50.092503

Cited by 9 publications

(7 citation statements)

References 10 publications

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“…In early decades Lukoz [1] was the first one using a grating to improve the resolution of the system, and Ueda et al [2,3] used holography to obtain a super resolved image. In holography [4]- [7] structured illumination, phase grating and amplitude and phase masks have been used to obtain high resolution. In these techniques, either a lens array or gratings are used to produce a tilted beam illumination pattern.…”

Section: Introductionmentioning

confidence: 99%

“…These frequencies would lie outside if such tilted illumination were not used. In [7] the lens array is used to illuminate the object with shifted beams. All the shifted beams in the referred paper illuminate some portion of object while in our technique the selected part of the object is illuminated by each inclined beam (due to the linear phase they carry).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, we have presented the cross section view of our results to quantify the improved resolution. In the referred paper [7], different beams and phases are given by a manual method. While in our case a SLM is controlled by computer to illuminate the object and also to change the phases which minimize the errors.…”

Section: Introductionmentioning

confidence: 99%

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Holographic superresolution using spatial light modulator

Hussain

Martínez

Campos

2013

J. Eur. Opt. Soc.-Rapid Publ.

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This paper describes a technique of superresolution using a reflective mode spatial light modulator, a coherent source of light, and a transmission mode object placed in the input plane of an imaging system, in particular we are using for the demonstration a 4f system. The spatial light modulator (SLM) enables for creating tilted plane wave illumination and it also permits adding constant phases of 0, π/2, 3π/2 and π. The angle of illumination created by the SLM is defined according to the dimension of aperture placed at the Fourier plane of 4f optical system. For each defined angle of illumination created by the SLM four holograms corresponding to the transmission mode object are recorded. This system is capable of retrieving phase and amplitude information of the images, corresponding to each impinging illumination. By simply adding these complex images a super resolved image is obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Holographic superresolution using spatial light modulator

Hussain

Martínez

Campos

2013

J. Eur. Opt. Soc.-Rapid Publ.

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“…The digital holography techniques are used to bring the higher spatial frequencies into the pass band using structure illumination [8][9]. The structure illumination is produced by different method like Vertical-cavity surface-emitting laser (VCSEL), grating or lens array.…”

Section: Introductionmentioning

confidence: 99%

Multiplexing structured illumination in spatial light modulators to achieve superresolution

Hussain¹

2013

Opt. Pura Apl.

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ABSTRACT:We present some numerical results corresponding to a recently proposed structured illumination based set-up able to achieve resolution beyond the diffraction limit in 4f optical setup. The technique is based on the use of a liquid crystal display to multiplex the different linear phases which produce all the tilted plane waves at the same time. At the SLM plane constant phases are assigned to each tilted beam. The object is illuminated several times with simultaneous illumination (i.e., simultaneous tilted beams), every time carrying different constant phases. A total of interferograms are recorded at the CCD plane, corresponding to the same number of constant phases sets. The proper selection of phases helps to separate the correlated terms. In a post processing procedure, each hologram is transformed to the spectrum domain and spatially shifted to its proper position. The combination of these shifted segments of the object spectrum gives the synthesized spectrum. To obtain super resolved image inverse Fourier transform is taken of the synthesized spectrum.Key words: Spatial Light Modulators, Super-Resolution, Multiplexed Illumination. RESUMEN:En este trabajo se presentan resultados numéricos correspondientes a un nuevo método para la obtención de imágenes super-resueltas que se basa en la iluminación estructurada del objeto a estudiar. En particular, la iluminación estructurada consiste en diferentes ondas planas con distintas inclinaciones que iluminan el objeto simultáneamente. Para generar dicha iluminación, se utiliza una pantalla de cristal líquido donde se multiplexan diferentes fases lineales, que originan las distintas ondas planas simultáneamente. Para recuperar apropiadamente la información extra de las frecuencias altas del objeto, que está codificada en los diferentes haces inclinados, se ilumina el objeto diversas veces con la iluminación estructurada, pero añadiendo diferentes fases constantes a los distintos haces. Los correspondientes interferogramas se capturan mediante el uso de una cámara CCD. La selección adecuada de los valores para las fases constantes añadidas, permite separar los diferentes términos correlacionados. Finalmente, en un post-procesado, se realiza la Transformada de Fourier de cada holograma obtenido, y se desplaza cada fragmento del dominio de frecuencias del objeto a su posición correcta. Aplicando la transformada de Fourier inversa al espectro sintetizado, obtenemos una imagen super-resuelta del objeto.Palabras clave: Modulador Espacial de Luz, Super-Resolución, Iluminación Multiplexada.

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“…The technique has been actively researched in many fields, such as quantitative phase imaging [2], particle and flow measurement [3], microscopy [4,5], object recognition [6,7], projection [8], and many other fields. In digital holography, pixel size and pixel pitch of an image sensor are too large to record a fine hologram.…”

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confidence: 99%

Single-shot dual-wavelength phase unwrapping in parallel phase-shifting digital holography

et al. 2014

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We propose a single-shot phase-unwrapping method using two wavelengths in parallel phase-shifting digital holography (PPSDH). The proposed method enables one to solve the phase ambiguity problem in PPSDH. We conducted an experiment of the proposed method using two lasers whose wavelengths are 473 and 532 nm. An object having about 1.9 μm step, which is 7.1 times larger than the half wavelength of one of the lasers (266 nm), was fabricated by using vapor deposition of aluminum. Single-shot measurement of the height of the object was successfully demonstrated, and the validity of the proposed method was verified.

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Super-Resolution Digital Holographic Microscopy for Three Dimensional Sample Using Multipoint Light Source Illumination

Cited by 9 publications

References 10 publications

Holographic superresolution using spatial light modulator

Holographic superresolution using spatial light modulator

Multiplexing structured illumination in spatial light modulators to achieve superresolution

Single-shot dual-wavelength phase unwrapping in parallel phase-shifting digital holography

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