Digital holographic microscopy for longitudinal volumetric. We demonstrate a new type of spatial phase shifting, dynamic interferometer that can acquire phase shifted interferograms in a single camera frame. Parallel twostep phaseshifting digital holography using. Automated coal petrography for macerals characterization. Future radiation pressure at the of optics and photonics nanoscale. Improving image quality of parallel phaseshifting digital.
As nouns the difference between holography and hologram is that holography is physics a technique for recording, and then reconstructing, the amplitude and phase distributions of a coherent wave disturbance. The inline configuration was applied to make full use of the spacebandwidth product sbp of the camera and hence can resolve finer spatial details of the sample. We propose an optical implementation of a parallel twostep phaseshifting digital holography that utilizes a polarization technique. The light source was an 80 nm broadband laser pulse which can theoretically support about 11 fs temporal width. Twosteponly quadrature phaseshifting digital holography jungping liu1 and tingchung poon2, 1department of photonics, feng chia university, taichung 40724, taiwan 2bradley department of electrical and computer engineering, virginia tech, blacksburg, virginia 24061, usa corresponding author. The proposed digital holography carries out threestep phase shifting at the same time by using a phaseshifting array device located in the reference beam. Osa parallel twostep phaseshifting digital holography. Materials and applications monday tuesday 15 16 february 2016. We constructed a system of parallel twostep phaseshifting digital holography and experimentally demonstrated the technique, for the first time. In phaseshifting digital holography an inline setup is employed in the recording to reduce the spatial frequency spectrum of the hologram, and the distribution of complex amplitude on the ccd is directly derived by means of phaseshifting of the reference beam and subsequent analysis of hologram patterns to suppress the conjugate image. Awatsuji y, tahara t, kaneko a, koyama t, nishio k, ura s, kubota t and matoba o 2008 parallel twostep phaseshifting digital holography appl. We report the use of digital holographic microscopy dhm as a viable microscopy approach for quantitative, nondestructive longitudinal imaging of in vitro threedimensional 3d tumor models. Pdf the authors propose parallel twostep phaseshifting digital. The term hologram is a combination of the greek words holos complete and gram message holography is a process for recording and displaying threedimensional information without lenses therefore holography opens up completely new possibilities in science, engineering, graphics and arts.
Its success depends on the accurate estimation of the reference wave intensity from the two acquired holograms. The linear relationship between the sample complex object wave and its approximated complex fresnel field obtained using single shot parallel phaseshifting digital holograms ppsdh is used in compressive sensing framework and an accurate phase reconstruction is demonstrated. Parallel threestepphaseshifting digital holography. See the complete profile on linkedin and discover phans connections and jobs at similar companies. We demonstrate a new type of spatial phaseshifting, dynamic interferometer that can acquire phaseshifted interferograms in a single. Lightinflight recording by parallel phaseshifting digital.
Holographic storage system based on digital holography for recording a phase data page in a. A new estimation method for twosteponly quadrature phase. Waxs research interests include optical spectroscopy for early cancer detection, novel microscopy and interferometry techniques. We propose a parallel two step phaseshifting digital holography technique capable of instantaneous measurement of threedimensional objects, with a view toward measurement of dynamically moving objects. Fast method of recovering referencewave intensity in two. Kakue t1, moritani y, ito k, shimozato y, awatsuji y, nishio k, ura s, kubota t, matoba o. Image quality improvement of parallel fourstep phase. May 16, 2017 two step phase shifting differentialrecording digital holographic microscopy.
Digital holography implements the classic holographic principle as a two. On the other hand, parallel phaseshifting pps digital holography is capable of instantaneous measurement by capturing several spatially multiplexed holograms with singleshot exposure. We propose parallel threestep phaseshifting digital holography as a technique capable of noiseless instantaneous measurement of threedimensional objects based on phaseshifting interferometry. We propose an imagereconstruction algorithm of parallel phaseshifting digital holography ppsdh which is a technique of singleshot phaseshifting interferometry. Image processing of corona virus using interferometry.
For coherent light metrological applications, especially on rough objects, digital holography dh is considered one of the established interferometric methods because of. May 20, 2015 based on traditional three step, phase shifting holography, the phases of the reference wave can be modulated by pzt to 0, and. Jp3751051b2 iline stepper lithography for phase shift. Maksim kulya, vladimir katkovnik, karen egiazarian, nikolay petrov. Top kodi archive and support file community software msdos vintage software apk cdrom software cdrom software. Mext supported program for the strategic research foun dation at private. A laser beam is split into an object beam and a reference beam. In one of our previous works the preliminaries of an alldigitalholographic approach to 3dtv were given. Parallel twostep phaseshifting digital holograph microscopy based on a grating pair. Parallel two step phaseshifting digital holography is a technique for singleshot implementation of phaseshifting interferometry and requires only the intensity distribution of the reference.
A perpendicularly polarized light beam is emitted from the laser and is split into two beams by a beam splitter. The authors propose parallel twostep phaseshifting digital holography to improve the image quality of parallel phaseshifting digital holography. Numata, phaseshifting digital holography with a phase difference. This system is able to obtain several interferograms simultaneously. The interferometer is constructed with a pixelated phase mask aligned to a detector array. Based on traditional threestep, phaseshifting holography, the phases of the reference wave can be modulated by pzt to 0, and.
Apr 26, 2010 image quality improvement of parallel fourstep phaseshifting digital holography by using the algorithm of parallel two step phaseshifting digital holography. Fourstep phaseshifting digital holography simultaneously. When we study parameters effects on digital holography, the demonstration shows that how the software and digital holography can be used in optical interferometry. Osa experimental demonstration of parallel twostep. In one of our previous works the preliminaries of an all digital holographic approach to 3dtv were given. We propose parallel three step phase shifting digital holography as a technique capable of noiseless instantaneous measurement of threedimensional objects based on phase shifting interferometry. Us5766806a us08711,112 us71111296a us5766806a us 5766806 a us5766806 a us 5766806a us 71111296 a us71111296 a us 71111296a us 5766806 a us5766806 a us 5766806a authority us unite. We propose an algorithm that can improve the quality of the reconstructed image from the single hologram recorded by the optical system of the parallel fourstep phaseshifting digital holography. In the path of object wave, a test specimen, such as a microlens array, is placed in the front focal plane of microscope objective mo. Complexwave retrieval from a single offaxis hologram. Osa parallel threestep phaseshifting digital holography. The phase mask encodes a highfrequency spatial interference.
The proposed technique carries out the two step phaseshifting method at one time and can be optically implemented by using a phase. In this contribution, we have focused on two step phase shifting digital holography and proposed a fast method to recover the referencewave intensity from the complex hologram without using either iteration procedure or physical measurement for exact phase retrieval. Phase reconstruction using compressive two step parallel phaseshifting digital holography prakash ramachandran, zachariah alex, anith nelleri. Study of parameters effect on holography digital image. Parallel phaseshifting digital holographic microscopy. This paper presents a twostep phaseshifting interferometry technique for fast inspection of uniformity of optoelectronic samples. Parallel twostep phaseshifting digital holography is a technique for singleshot implementation of phaseshifting interferometry and requires only the intensity distribution of the reference wave and spatial two phaseshifted holograms. Twostep phase shifting differentialrecording digital. In the conventional algorithms in ppsdh, the residual 0thorder diffraction wave and the conjugate images cannot be removed completely and a part of spacebandwidth information is discarded. It is widely applied in computer reconstruction for the object image, optelectronic reconstruction and the object information measurement, in which the computer reconstruction is the basis of the others. The study of intact, living cells with optical spectroscopy offers the opportunity to observe cellular structure, organization and dynamics in a way that is not. Advanced photonics journal of applied remote sensing journal of astronomical telescopes, instruments, and systems journal of biomedical optics. Two steponly phaseshifting interferometry with optimized detector bandwidth for microscopy of live cells natan t. The proposed algorithm applies the imagereconstruction algorithm of parallel twostep phaseshifting digital holography to the hologram so as to reduce errors in the reconstructed image and.
Compressive optical image encryption scientific reports. Meanwhile, the digital holographic configuration was introduced to jtc and the encryption methods were presented with threedimensional keys 9,10 and a hidden informationencoding architecture, and a doubleimage encryption method using two steponly quadrature phaseshifting digital holography based on jtc was proposed. Compressive optical image encryption europe pmc article. Parallel twostep phaseshifting digital holography osa. Study of parameters effect on holography digital image open. Experimental demonstration of parallel twostep phaseshifting digital holography. The technique is based on phaseshifting interferometry. Osa image quality improvement of parallel fourstep.
Rinehart, and adam wax department of biomedical engineering, fitzpatrick institute for photonics, duke university durham, north carolina 27708, usa. Specific phase shifts for respective wavelengths are introduced to remove the crosstalk components and extract only the object wave at the desired wavelength from the holograms. Orthogonally circularly polarized object and reference waves are diffracted twice by a pair of gratings, and two parallel copies for each beams come into being. Image processing of uniform objects and modified apertures was outlined 10 14. The 3d content generation for this display is carried out by means of digital holography. In line digital holographic microscopy can make full use of resolving power of ccd. Singleshot two step phaseshifting digital holography capable of instantaneous three dimensional image measurement, tatsuki tahara, atsushi kaneko, takamasa koyama, kyoto institute of technology, yasuhiro awatsuji, presto, japan science and technology agency, kenzo nishio, shogo ura, kyoto institute of. Piv and digital holography for measuring blood flows and vessel wall dynamics. For coherent light metrological applications, especially on rough objects, digital holography dh is considered one of the established interferometric methods because of its subwavelength accuracy. Parallel twostep spatial carrier phaseshifting interferometric phase.
The implementation uses a phaseshifting array device consisting of a retarder array attached to an image sensor, and does not require the optical system to image the phaseshifting array device onto the image sensor required for the previously reported. Parallel phaseshifting digital holographic microscopy ncbi. Kubota, parallel quasiphaseshifting digital holography that can achieve instantaneous measurement, 2004 ico international conference optics and photonics in technology frontier, pp. Improving image quality of parallel phaseshifting digital holography. The object beam first illuminates an object image that is used for encryption and subsequently passes through two random phase masks and to perform the encryption using the drpe method. Then, the three interference intensities of the complex amplitude. Phase retrieval, phase imaging, optical systems, phase measurement, phase modulation, wavefronts, super resolution, wave propagation, image resolution, diffraction. Sign in view cart help conference proceedings papers presentations journals. Highspeed broadband slightoff digital holography based on.
Following established methods, we prepared 3d cultures of pancreatic cancer cells in overlay geometry on extracellular matrix beds and obtained digital holograms at multiple time points. The proposed technique can increase the effective number of pixels of hologram twice in comparison to the conventional parallel fourstep technique. The compressive optical image encryption system is shown in. 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. View program details for spie opto conference on practical holography xxx. A lithography method for phase shift mask patterning for forming multiple levels of integrated circuits ics on a semiconductor wafer in an iline stepper having a natural stepper line width, comprising. Figure 1 illustrates the schematic diagram of tpddh in microscopy.
Pdf parallel phaseshifting digital holographic microscopy. Parallel phaseshifting digital holographic microscopy ppsdhm figure 1a shows a block diagram of the ppsdhm. The lithographic method includes using different masks 102, 107 to pattern different levels of layout, one such level being the gate level. Singleshot phaseshifting incoherent digital holography iopscience. Therefore, the concept of digital holography is a promising approach to 3dtv. Twosteponly quadrature phaseshifting digital holography. We propose parallel phaseshifting digital holographic microscopy ppsdhm which has the ability of threedimensional 3d motion measurement using spacedivision multiplexing technique. We propose an optical implementation of a parallel two step phaseshifting digital holography that utilizes a polarization technique. 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.
View program details for spie optical metrology conference on optical methods for inspection, characterization, and imaging of biomaterials. Optical methods for inspection, characterization, and. Experimental demonstration of parallel twostep phaseshifting. Doubleimage encryption on joint transform correlator using twosteponly quadrature phaseshifting digital holography. Twostep phase shifting differentialrecording digital holographic microscopy. Shaked, simultaneous twowavelength phase unwrapping using external module for multiplexing offaxis holography using external module for multiplexing offaxis holography, optics letters, vol. Pdf parallel twostep phaseshifting digital holograph.
First, we retrieve the complex object wave in the acquisition plane from the holograms samples. We constructed a parallel phaseshifting digital holographic microscope. The guest hospitality suite, exciting science of light 8. The proposed technique carries out the twostep phaseshifting method at one time and can be optically implemented by using a phase. Sep 17, 2017 as nouns the difference between holography and hologram is that holography is physics a technique for recording, and then reconstructing, the amplitude and phase distributions of a coherent wave disturbance.
To explain this, we plot the amplitude and phase uncertainties for thecombinatorialpairsofi1,i2,andi3 onthesamegraph in figs. 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. Uncertaintymanaged phaseshifting digital holography. Us5766806a method of optical lithography using phase. Based on parallel phaseshifting 28, multiple phaseshifted holograms are numerically. Aug 02, 2004 digital holography technique is the numerical version of conventional holography technique. By the ppsdhm, instantaneous information of both the 3d structure and the phase distributions of specimens can be simultaneously acquired with a singleshot exposure. We propose a parallel twostep phaseshifting digital holography technique capable of instantaneous measurement of threedimensional objects, with a view toward measurement of dynamically moving objects. Twosteponly phaseshifting interferometry with optimized. Parallel twostep phaseshifting digital holography records a fig. Two steponly quadrature phaseshifting digital holography can reconstruct the original complex object using only two holograms without the additional recording of the reference wave intensity and the object wave intensity. The implementation uses a phaseshifting array device consisting of a retarder array attached to an image sensor, and does not require the optical system to image the phaseshifting array device onto the image sensor required for the previously reported optical. The addition of electronics, computers, and software to interferometry has enabled enormous improvements to optical metrology. We propose a parallel twostep phaseshifting digital holography technique capable of instantaneous measurement of threedimensional objects, with a view toward measurement of dynamically moving.
The proposed digital holography carries out three step phase shifting at the same time by using a phase shifting array device located in the reference beam. The compressive optical image encryption system is shown in fig. Complexdomain sparse imaging in terahertz pulse timedomain holography with balance detection. However, the quality of the reconstructed image is reduced because the. The experimental setup for a simultaneous phase shifting quasicommonpath interferometer based on a machzehnder system has been described to obtain the profiles of phase objects from theanalysis of optical phase using phase shifting techniques. Optical methods for inspection, characterization, and imaging. Parallel twostep phaseshifting digital holography is a technique for singleshot implementation of phaseshifting interferometry and requires only the intensity distribution of the reference. Jp3751051b2 iline stepper lithography for phase shift mask. Singleshot twostep phaseshifting digital holography capable of instantaneous three dimensional image measurement, tatsuki tahara, atsushi kaneko, takamasa koyama, kyoto institute of technology, yasuhiro awatsuji, presto, japan science and technology agency, kenzo nishio, shogo ura, kyoto institute of. Phase reconstruction using compressive twostep parallel. One beam illuminates the specimen, and then the scattered light from the specimen is collected by a microscope objective. Yasuhiro awatsuji, tatsuki tahara, atsushi kaneko, takamasa koyama, kenzo nishio, shogo. In a second step, if required, we propagate the wave front by using a digital fresnel transform to achieve proper focus.
Supported program for the strategic research foundation at private universities from 20 to. Osa algorithm for reconstructing wide spacebandwidth. Computer reconstruction by phaseshifting digital holography. Parallel phaseshifting color digital holographic microscopy. Meanwhile, the digital holographic configuration was introduced to jtc and the encryption methods were presented with threedimensional keys 9,10 and a hidden informationencoding architecture, and a doubleimage encryption method using twosteponly quadrature phaseshifting digital holography based on jtc was proposed. Parallel phase shifting digital holographic microscopy ppsdhm figure 1a shows a block diagram of the ppsdhm. Osa parallel phaseshifting digital holographic microscopy. Fourstep phaseshifting digital holography simultaneously sensing dualwavelength information from wavelengthmultiplexed holograms is presented.
Two step parallel phase shifting interferometry using a double cyclic shear interferometer. A parallel twostep polarizing phase shifting interferometer. The reconstructed wavefield contains phase and intensity distributions, which means it is full 3d, exhibiting such effects as depth and parallax. Parallel twostep phaseshifting digital holography is a technique for singleshot implementation of phaseshifting interferometry and requires only the. Color online schematic flow of image reconstruction of the hologram recorded by parallel twostep phaseshifting digital holography. Optical setup is based on phaseshifting digital holography with multiple lasers. Phaseshifting interferometry is used for getting data into a computer so the data can be analyzed 2 9. An optical configuration for parallel twostep phaseshifting digital holographic microscopy dhm based on a grating pair is proposed for the purpose of realtime phase microscopy.
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