Phase shifting digital holography pdf merge

Optical scanning holography osh 1,2 is one of the most effective techniques for capturing a complex hologram of a physical scene. Thus phaseshifting digital holography realizes a new flexibility of quantitative acquisition, processing, transmission, and display of coherent optical information by means of modem digital processing and communication channels and optoelectronic devices. A series of phase shifting fringes are generated by computer and outputted by a digital micro. Fourstep phaseshifting digital holography simultaneously sensing.

Twostep phaseshifting interferometrymerged phasedivision multiplexing 2. Pdf conventional methods of quadrature phaseshifting holography require two holograms and either intensity distribution of the reference wave or that. A digital phase shifting inline holographic system based on the single coherence beam is developed. Fourstep phaseshifting digital holography simultaneously. Phase shifting digital holography psdh is considered as a promising imaging technique with wide application in optical storage, topography measurement and defect detection. It is free from tedious photographic processing and delivers threedimensional distributions of both amplitude and phase quantitatively. Threedimensional microscopy with phase shifting digital holography.

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. Chapter 5 phaseshifting digital holography principles and. Effects of quantization in phaseshifting digital holography. Suppression of the zeroorder and twin images by phaseshifting digital. Dynamic refractive index distribution measurement of dynamic process by combining dualchannel simultaneous phaseshifting interferometry and total internal reflection. Highresolution parallel phaseshifting digital holography. Pdf twosteponly quadrature phaseshifting digital holography.

Twostep phaseshifting interferometry is merged into the procedures to decrease the number of the recorded holograms. Multiwavelength digital holography and phaseshifting. 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. We propose multiwavelengthmultiplexed phaseshifting incoherent color digital holography. Speckle corrleation in phaseshifting digital holography osa. Pdf study on phase stitching technique on digital holography. Wave front reconstruction by means of phaseshifting. Pdf threedimensional microscopy with phaseshifting. In this technique, a monochrome image sensor records wavelengthmultiplexed, phaseshifted, and incoherent holograms, and a phaseshifting interferometry technique selectively extracts object waves at multiple wavelengths from the several recorded holograms. Pdf we propose singleshot incoherent digital holography in which a single path inline configuration and phaseshifting interferometry are adopted find. Principles and techniques of digital holographic microscopy. Its main limitation that is caused by much lower resolution of ccds than photographic materials has been substantially overcome by phaseshifting digital holography that reduces the spatial frequency of hologram by employing the inline setup and. A new method for threedimensional image formation is proposed in which the distribution of complex amplitude at a plane is measured by phaseshifting interferometry and then fresnel transformed by a digital computer.

We discuss quantization effects of hologram recording on the quality of reconstructed images in phaseshifting digital holography. Highresolution parallel phaseshifting digital holography using a lowresolution phaseshifting array device. Fourstep phaseshifting digital holography simultaneously sensing dualwavelength information from wavelengthmultiplexed holograms is presented. Optical setup is based on phaseshifting digital holography with multiple lasers. Wave front reconstruction by means of phaseshifting digital inline holography. Pdf we propose singleshot incoherent digital holography in which a singlepath inline configuration and phaseshifting interferometry are adopted find. We vary bit depths of phase shifted holograms in both numerical simulation and experiments and then derived the complex.

Digital holography is an emerging field of new paradigm in general imaging appli. Pdf singleshot phaseshifting incoherent digital holography. In digital holography holograms are recorded by a ccd and image reconstruction is performed by a computer. Yamaguchi i and zhang t 1997 phaseshifting digital holography opt. Digital holography provides 3dimensional distributions of complex amplitude whereas speckle patterns are highly contrasted everywhere. Twostep phaseshifting interferometry merged phasedivision multiplexing 2. Since the resolution of the ccd is much lower than that of holographic films, we need to combine the reference and object beams through a beam splitter. It is different from existing methods such as phase shifting.