Phase shifting digital holography has been used for the study of vibrating objects. Threedimensional microscopy with phase shifting digital holography. Realtime threedimensional object reconstruction by use of a phase encoded digital hologram, appl. Incoherent digital holography can be implemented with a singlepath setup by using a spatial light modulator slm. The method can reconstruct an arbitrary cross section of a threedimensional object with higher image quality and a wider viewing angle than from conventional digital holography. Elemental image synthesis for integral imaging using phase. This technique is capable of capturing threedimensional 3d information of object and carrying out phase shifting interferometry with a singleshot exposure because the interference fringe images in which the information of multiple phase shifted holograms is spatially multiplexed are. Phaseshifting digital holography with compensation of. A perpendicularly polarized light beam is emitted from the laser and is split into two beams by a beam splitter.
The concept of the proposed digital holography is based on incoherent digital holography and parallel phaseshifting. Twostep phase shifting differentialrecording digital holographic microscopy. Digital holography generally offers more flexibility than conventional holographic interferometry and speckle interferometry because of its simple setup and easy. The phase shifting or phase stepped digital holography process entails capturing multiple interferograms that each indicate the optical phase relationships between light returned from all points on the illuminated object and a controlled reference beam of light. Introduction to modern digital holography pdf book manual. Digital holography device and phase shifting array download pdf info publication number ep2224291b1. Singleshot phaseshifting digital holography based on the. It derives the phase of the averaged conjugate product of complex amplitudes before and after wavelength change or object deformation, corresponding to the complex coherence factor, and is.
Feb 20, 2002 phase shifting digital holography with compensation of aberrations a phase shifting machzehnder interferometer is used for recording four quadrature phase shifted offaxis holograms. May 25, 2012 we succeeded in highspeed imaging of gas flow by means of parallel phase shifting digital holography. The phaseshifting inline transmission holographic system is designed and built. A significant constraint of digital holography is the pixel count and resolution of the imaging devices. Digital holography fourier optics and computational imaging. Read online introduction to modern digital holography book pdf free download link book now.
Division of electronics, kyoto institute of technology, japan. S 1,y and s 2,y with the phase of 2 3 n and 4 3 n, respectively. Singleshot phaseshifting incoherent digital holography view the table of contents for this issue, or go to the journal homepage for more 2017 j. Sign in view cart help conference proceedings papers presentations journals. Osa multiwavelengthmultiplexed phaseshifting incoherent. Highspeed imaging of gas flow by parallel phaseshifting. We conduct both numerical simulation and preliminary experiment. Digital recording and numerical reconstruction of holograms. Phase shifting digital holography is a way recording the digital hologram by changing the phase of the reference beam and extracting the complex field of the object beam. An slm generates two waves that interfere with each other and form an incoherent. Digital holography can be adapted appropriately for. Uncertaintymanaged phaseshifting digital holography. With phase shifting holography, it is possible to obtain the two quadratures of the field even though the conjugate image alias and the true image overlap, because aliases can be removed by taking image differences.
Javidi, a companding approach for nonuniform quantization of digital holograms of threedimensional objects, optics express 1412, 512954 2006. We discuss quantization effects of hologram recording on the quality of reconstructed images in phaseshifting digital holography. In phaseshifting digital holography an inline setup is employed in the. After extraction, a holographic image of an object is obtained. Calibrated phaseshifting digital holographic microscope. Setup for microscopy using phase shifting digital holography without imaging lens onion peels z 17mm, zq itmm, magnification m5. Digital holography and its multidimensional imaging. Phase shifting digital holography psdh is considered as a promising imaging technique with wide application in optical storage, topography measurement and defect detection. Singleshot phaseshifting incoherent digital holography dois. We propose multiwavelengthmultiplexed phase shifting incoherent color digital holography.
Threedimensional object reconstruction using phaseonly. Suppression of the zeroorder and twin images by phase shifting digital holography allows efficient use of the pixel array 24. Development of 3d measurement system using phase shift. By the ppscdhm, instantaneous information of not only the 3d structure of specimens but also the spectral image can be simultaneously acquired with a singleshot exposure. Digital holography offers a means of measuring optical phase data and typically delivers threedimensional surface or optical thickness images. Digital holography comes in different flavors, such as offaxis fresnel, fourier, image plane, inline, gabor and phase shifting digital holography, depending on the optical setup. Highresolution quantitative phase contrast microscopy by digital holography christopher j.
Pdf singleshot phaseshifting incoherent digital holography. Effects of quantization in phaseshifting digital holography. Pdf digital holographic microscopy with phaseshiftfree. Ep2224291b1 digital holography device and phase shifting. Digital holography and interferometric metrology of optical fibres. Image rendering, or reconstruction of object data is performed numerically from digitized interferograms. An amplitudeonly elliptical vortex sieve as a new kind of phase shifter.
May 15, 2020 download introduction to modern digital holography book pdf free download link or read online here in pdf. Advanced photonics journal of applied remote sensing journal of astronomical telescopes, instruments, and systems journal of biomedical optics. Digital holography for quantitative phase contrast. The interference phase has to be recovered with phase shifting methods 2628, requiring additional experimental effort phase shifting unit. Pdf vibration analysis by phase shifting digital holography. We previously proposed parallel phaseshifting digital holography ppsdh 1416, a technique that records a single image in which the multiple holograms required for phase shifting interferometry are combined by spacedivision multiplexing. They are recorded by a video camera and transmitted to a computer for realtime numerical reconstruction. Parallel phaseshifting digital holographic microscopy. Speckle noise suppression in measurement by phaseshifting. In the present study we propose a polarization phase shifted dhm setup based on machzehnder interferometer where polarization phase shifting is achieved by the use of a polarizermasked. Development of 3d measurement system using phase shift digital holography. A digital phase shifting technique capable of quantitatively determining the phase of holographic interferometric displacement fringes is presented. In this study, we propose a twinimage reduction method by combining the periphery method with the random phaseshifting method. Freeviewpoint images captured using phaseshifting synthetic aperture digital holography tatsuya nakatsuji and kyoji matsushima department of electrical and electronic engineering, kansai university, yamatecho 3335, suita, osaka 5648680, japan corresponding author.
One holographic setup method that can reduce the noises mostly is a wider viewing angle from conventional digital hologram using an offaxis configuration, called phaseshifting digital holography. Twinimage reduction method for inline digital holography. Polarization phase shifting in digital holographic. Phase shifting in digital holography is essentially implemented by translating one of the interferometer mirrors attached to a precalibrated piezo actuator. The technique implements four kinds of phase shifting at a time using a phase shifting array device located in the reference beam. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. We propose and demonstrate lightinflight recording by parallel phase shifting digital holography to obtain a motion picture of ultrashort light pulse propagation free from unwanted images, which are a zerothorder diffraction image and a conjugate image, by phase shifting interferometry with a singleshot exposure. Digital holography dh 1016 is a technique in which a digital hologram that contains an object wavefront is recorded, and both 3d and quantitative phase images of an object are reconstructed using a computer. The method can reconstruct an arbitrary cross section of a three. Twostep phase shifting differentialrecording digital. To perform phase shifting digital holography psdh, several holograms have to be recorded, each with the phase of the reference wave shifted to different states. The optical phase of the reference beam is shifted.
Digital holography refers to the acquisition and processing of holograms with a digital sensor array, typically a ccd camera or a similar device. The timeaveraged complex amplitude of fresnel diffracted field due to a vibrating object was obtained by using. Lightinflight recording by parallel phaseshifting digital. Download ebook digital holography and interferometric. An effective scheme for phaseshifting imageplane digital holography with elliptical vortex reference beam is proposed. It considers three different approaches such as off. Proposed phaseshifting inline digital hologram processing technique. Parallel phaseshifting color digital holographic microscopy. The basic principle of this technique and its experimental verification are described. Based on phase shifting interferometry 31, 32, only the objectwave information is extracted with multiple phase shifted holograms. For hologram recording a conventional holographic setup can be used, as long as a phase shifting element is included in the optical path of the reference beam see fig.
Holograms are generated by combining a coherent reference wave with the wave received from a specimen. Freeviewpoint images captured using phaseshifting synthetic. Twostep phase shifting differentialrecording digital holographic. A schematic of bimodal incoherent digital holography for both of 3d and qidof imaging. All books are in clear copy here, and all files are secure so dont worry about it. The interference phase has to be recovered with phaseshifting methods 2628, requiring additional experimental effort phaseshifting unit. Highresolution quantitative phasecontrast microscopy by. Mirror with pzt half mirror phase shift half mirror figure 53.
We propose parallel phase shifting color digital holographic microscopy ppscdhm which is capable of both color imaging and threedimensional 3d motion measurement by using spacedivision multiplexing technique. Digital holographic highspeed 3d imaging for the vibrometry of fastoccurring phenomena. In this technique, a monochrome image sensor records wavelengthmultiplexed, phase shifted, and incoherent holograms, and a phase shifting interferometry technique selectively extracts object waves at multiple wavelengths from the several recorded holograms. In reflection dhm, the phase shift image forms a topography image of the object transparent objects, like living biological cells, are traditionally viewed in a phase. The authors present a parallel phase shifting digital holography as a digital imaging technique for recording and reconstruction of threedimensional object. The first part deals with the applications of interferometric methods on characterization of bent optical fibres. This technique uses computer control to take data and calculate surface deformation. By digital holography the intensity and the phase of electromagnetic wave. A new algorithm for fringe phase analysis is proposed for shape and deformation measurement of diffusely reflecting surfaces by digital holography. Twowavelength holography and phaseshifting interferometry are combined to measure the phase contours of deep wavefronts and surfaces, such as those produced by aspherics, with a variable sensitivity.
Chapter 1 parallel phaseshifting digital holography. In addition to presenting traditional digital holography and applications in chapters 14, we also discuss modern applications and techniques in digital holography such as phase shifting holography, lowcoherence holography, diffraction tomographic holography, optical scanning holography. To implement phaseshifting digital holography, the reference beam passes through both a halfwave plate and a quarterwave plate as shown in fig. Download pdf a digital phase shifting technique capable of quantitatively determining the phase of holographic interferometric displacement fringes is presented. Parallel phaseshifting digital holography is a technique capable of not only instantaneously measuring the threedimensional 3d field but also motion picture measurement of time evolution in the 3d field. The amplitudeonly vortex lens is a kind of diffractive optical elements does which can be used for focusing and imaging in a wide spectral region, such as coherent x. Techniques of digital holography are improved in order to obtain high. One beam illuminates the specimen, and then the scattered light from the specimen is collected by a microscope objective. Yamaguchi, where the complex field at the hologram is obtained by phase shifting interferometry 1.
Chapter 5 phaseshifting digital holography principles and. Prior art keywords light beams phase light digital holography wavelength prior art date 20071122 legal status the legal status is an assumption and is not a legal conclusion. The elliptical vortex sieve is convenient and widely applied in phaseshifting digital holography. We propose parallel quasiphaseshifting digital holography as a technique capable of noiseless instantaneous measurement of threedimensional objects. Phase shifting digital holography psdh is a very effective method of removing these terms, introduced by i. Parallel phase shifting digital holographic microscopy ppsdhm figure 1a shows a block diagram of the ppsdhm. Parallel phase shifting digital holography 2833 is a singleshot phase shifting technique using an inline system, and singleshot incoherent 3d imaging is expected by the combination of incoherent digital holography. Bimodal incoherent digital holography for both three.
Yamaguchi, effects of quantization in phase shifting digital holography, applied optics 4416, 12161225 2005. A new method for threedimensional image formation is proposed in which the distribution of complex amplitude at a plane is measured by phase shifting interferometry and then fresnel transformed by a digital computer. We succeeded in highspeed imaging of gas flow by means of parallel phaseshifting digital holography. Principles and techniques of digital holographic microscopy. Digital holographic interferometry and phaseshifting digital. Singleshot phaseshifting incoherent digital holography. Yamaguchi, threedimensional microscopy and measurement by phaseshifting digital holography, selected papers from fifth international conference on correlation optics, o. When interference fringes are very closely spaced, the phase data contain high frequencies where 2p ambiguities cannot be resolved. Figure 1 illustrates the schematic diagram of tpddh in microscopy. Digital holography fourier optics and computational. Digital gabor holography, without separate reference.
Digital holographic interferometry and phaseshifting digital holography. The proposed method succeeded in improving the reconstruction quality, compared to other oneshot recording methods parallel phaseshifting digital holography and random phaseshifting. Pdf threedimensional microscopy with phaseshifting. Surface shape measurement by dualwavelength phase shifting digital holography, fringe 2005, proc.
In this paper we propose singleshot, singlepath, inline, and phase shifting incoherent digital holography to achieve. The phase shift image is unique for digital holographic microscopy and gives quantifiable information about optical distance. Digital holographic phase shifting and interferometric characterization of optical fibers author. To explain this, we plot the amplitude and phase uncertainties for thecombinatorialpairsofi1,i2,andi3 onthesamegraph in figs. In this paper, the principle of the proposed method is described. Freeviewpoint images captured using phase shifting synthetic aperture digital holography tatsuya nakatsuji and kyoji matsushima department of electrical and electronic engineering, kansai university, yamatecho 3335, suita, osaka 5648680, japan corresponding author. The technique is implemented by inserting a phaseshifting array device consisting of array of 2. Pdf geometric phase shifting digital holography researchgate. As will be shown in the next subsection this phase term plays very important role in the method for singleshot phase shifting digital holography harada et al. Digital holography for quantitative phasecontrast imaging. The authors present a parallel phaseshifting digital holography as a digital imaging technique for recording and reconstruction of threedimensional object.
Parallel phaseshifting digital holographic microscopy ppsdhm figure 1a shows a block diagram of the ppsdhm. One holographic setup method that can reduce the noises mostly is a wider viewing angle from conventional digital hologram using an offaxis configuration, called phase shifting digital holography. Pdf when structured illumination is used in digital holographic microscopy dhm, each direction of the illumination fringe is required to be shifted. Building up from the basic principles of optics, this book describes key techniques in digital holography, such as phase shifting holography, lowcoherence. We propose a method generating elemental images for the integral imaging using 4step phaseshifting digital holography. Phaseshifting imageplane digital holography with elliptical. We vary bit depths of phase shifted holograms in both numerical simulation and experiments and then derived the complex. Phaseshifting errors are introduced in phaseshifted holograms for numerous reasons, such as the nonlinearity of piezoelectric transducers.
Phase shift images besides the ordinary brightfield image, a phase shift image is created as well. Phaseshifting inline digital holography on a digital. We propose parallel quasi phaseshifting digital holography as a technique capable of noiseless instantaneous measurement of threedimensional objects. At last, the experiment results are presented with a phase grating as a specimen. Google has not performed a legal analysis and makes no. Phase shifting digital holography 151 beam is frequency shifted and an object is scanned by an xy stage under focused illumination. Threedimensional microscopy with phaseshifting digital holography.
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