Academic literature on the topic 'Digital inline holography'

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Journal articles on the topic "Digital inline holography"

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Guildenbecher, Daniel R., Kathryn N. Gabet Hoffmeister, W. Marley Kunzler, Daniel R. Richardson, and Sean P. Kearney. "Phase conjugate digital inline holography (PCDIH)." Optics Letters 43, no. 4 (2018): 803. http://dx.doi.org/10.1364/ol.43.000803.

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Fratz, Markus, Tobias Beckmann, Joachim Anders, et al. "Inline application of digital holography [Invited]." Applied Optics 58, no. 34 (2019): G120. http://dx.doi.org/10.1364/ao.58.00g120.

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Picart, Pascal. "Recent advances in speckle decorrelation modeling and processing in digital holographic interferometry." Photonics Letters of Poland 13, no. 4 (2021): 73. http://dx.doi.org/10.4302/plp.v13i4.1126.

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Digital holography, and especially digital holographic interferometry, is a powerful approach for the characterization of modifications at the surface or in the volume of objects. Nevertheless, the reconstructed phase data from holographic interferometry is corrupted by the speckle noise. In this paper, we discuss on recent advances in speckle decorrelation noise removal. Two main topics are considered. The first one presents recent results in modelling the decorrelation noise in digital Fresnel holography. Especially the anisotropy of the decorrelation noise is established. The second topic presents a new approach for speckle de-noising using deep convolution neural networks. Full Text: PDF ReferencesP. Picart (ed.), New techniques in digital holography (John Wiley & Sons, 2015). CrossRef T.M. Biewer, J.C. Sawyer, C.D. Smith, C.E. Thomas, "Dual laser holography for in situ measurement of plasma facing component erosion (invited)", Rev. Sci. Instr. 89, 10J123 (2018). CrossRef M. Fratz, T. Beckmann, J. Anders, A. Bertz, M. Bayer, T. Gießler, C. Nemeth, D. Carl, "Inline application of digital holography [Invited]", Appl. Opt. 58(34), G120 (2019). CrossRef M.P. Georges, J.-F. Vandenrijt, C. Thizy, Y. Stockman, P. Queeckers, F. Dubois, D. Doyle, "Digital holographic interferometry with CO2 lasers and diffuse illumination applied to large space reflector metrology [Invited]", Appl. Opt. 52(1), A102 (2013). CrossRef E. Meteyer, F. Foucart, M. Secail-Geraud, P. Picart, C. Pezerat, "Full-field force identification with high-speed digital holography", Mech. Syst. Signal Process. 164 (2022). CrossRef L. Lagny, M. Secail-Geraud, J. Le Meur, S. Montresor, K. Heggarty, C. Pezerat, P. Picart, "Visualization of travelling waves propagating in a plate equipped with 2D ABH using wide-field holographic vibrometry", J. Sound Vib. 461 114925 (2019). CrossRef L. Valzania, Y. Zhao, L. Rong, D. Wang, M. Georges, E. Hack, P. Zolliker, "THz coherent lensless imaging", Appl. Opt. 58, G256 (2019). CrossRef V. Bianco, P. Memmolo, M. Leo, S. Montresor, C. Distante, M. Paturzo, P. Picart, B. Javidi, P. Ferraro, "Strategies for reducing speckle noise in digital holography", Light: Sci. Appl. 7(1), 1 (2018). CrossRef V. Bianco, P. Memmolo, M. Paturzo, A. Finizio, B. Javidi, P. Ferraro, "Quasi noise-free digital holography", Light. Sci. Appl. 5(9), e16142 (2016). CrossRef R. Horisaki, R. Takagi, J. Tanida, "Deep-learning-generated holography", Appl. Opt. 57(14), 3859 (2018). CrossRef E. Meteyer, F. Foucart, C. Pezerat, P. Picart, "Modeling of speckle decorrelation in digital Fresnel holographic interferometry", Opt. Expr. 29(22), 36180 (2021). CrossRef M. Piniard, B. Sorrente, G. Hug, P. Picart, "Theoretical analysis of surface-shape-induced decorrelation noise in multi-wavelength digital holography", Opt. Expr. 29(10), 14720 (2021). CrossRef P. Picart, S. Montresor, O. Sakharuk, L. Muravsky, "Refocus criterion based on maximization of the coherence factor in digital three-wavelength holographic interferometry", Opt. Lett. 42(2), 275 (2017). CrossRef P. Picart, J. Leval, "General theoretical formulation of image formation in digital Fresnel holography", J. Opt. Soc. Am. A 25, 1744 (2008). CrossRef S. Montresor, P. Picart, "Quantitative appraisal for noise reduction in digital holographic phase imaging", Opt. Expr. 24(13), 14322 (2016). CrossRef S. Montresor, M. Tahon, A. Laurent, P. Picart, "Computational de-noising based on deep learning for phase data in digital holographic interferometry", APL Photonics 5(3), 030802 (2020). CrossRef M. Tahon, S. Montresor, P. Picart, "Towards Reduced CNNs for De-Noising Phase Images Corrupted with Speckle Noise", Photonics 8(7), 255 (2021). CrossRef E. Meteyer, S. Montresor, F. Foucart, J. Le Meur, K. Heggarty, C. Pezerat, P. Picart, "Lock-in vibration retrieval based on high-speed full-field coherent imaging", Sci. Rep. 11(1), 1 (2021). CrossRef
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Singh, Dhananjay Kumar, Caroline C. Ahrens, Wei Li, and Siva A. Vanapalli. "Label-free, high-throughput holographic screening and enumeration of tumor cells in blood." Lab on a Chip 17, no. 17 (2017): 2920–32. http://dx.doi.org/10.1039/c7lc00149e.

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Белашов, А. В., Ч. Ж. Чжень та Н. В. Петров. "О возможности исследования доли неоднородностей оптических нелинейных сред с помощью осевой цифровой голографии с временным разрешением". Журнал технической физики 91, № 5 (2021): 846. http://dx.doi.org/10.21883/jtf.2021.05.50699.340-20.

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An approach to determining the fraction of local inhomogeneities nonlinear refractive index n2 in a transparent medium is considered. Data recording was performed using inline digital holography with femtosecond time resolution, where a set of probe beam inline digital holograms in the Fresnel diffraction zone to be recorded at various time delays between the pump and probe pulses. Digital holograms contain diffraction patterns that have information about the induced degenerate non-collinear phase modulation formed in the presence of nonlinear refractive index inhomogeneities. The developed algorithm is based on the calculation of the diffraction patterns Fourier spectrum and analysis of the intensity at zero spatial frequency. The proposed method has been validated in numerical modeling. An approach to determining the fraction of local inhomogeneities nonlinear refractive-index coefficient n2 in a transparent medium is considered. Data recording was performed using time-resolved inline digital holography, where a set of inline digital holograms in the Fresnel diffraction zone to be recorded in a probe beam at various time delays between the pump and probe pulses. Digital holograms contain diffraction patterns that have information about the induced degenerate noncollinear phase modulation formed in the presence of nonlinear refractive index inhomogeneities. The developed algorithm is based on the calculation of the diffraction patterns Fourier spectrum and analysis of the intensity at zero spatial frequency. The proposed method has been validated in numerical simulation.
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Белашов, А. В., Ч. Ж. Чжень та Н. В. Петров. "О возможности исследования доли неоднородностей оптических нелинейных сред с помощью осевой цифровой голографии с временным разрешением". Журнал технической физики 91, № 5 (2021): 846. http://dx.doi.org/10.21883/jtf.2021.05.50699.340-20.

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An approach to determining the fraction of local inhomogeneities nonlinear refractive index n2 in a transparent medium is considered. Data recording was performed using inline digital holography with femtosecond time resolution, where a set of probe beam inline digital holograms in the Fresnel diffraction zone to be recorded at various time delays between the pump and probe pulses. Digital holograms contain diffraction patterns that have information about the induced degenerate non-collinear phase modulation formed in the presence of nonlinear refractive index inhomogeneities. The developed algorithm is based on the calculation of the diffraction patterns Fourier spectrum and analysis of the intensity at zero spatial frequency. The proposed method has been validated in numerical modeling. An approach to determining the fraction of local inhomogeneities nonlinear refractive-index coefficient n2 in a transparent medium is considered. Data recording was performed using time-resolved inline digital holography, where a set of inline digital holograms in the Fresnel diffraction zone to be recorded in a probe beam at various time delays between the pump and probe pulses. Digital holograms contain diffraction patterns that have information about the induced degenerate noncollinear phase modulation formed in the presence of nonlinear refractive index inhomogeneities. The developed algorithm is based on the calculation of the diffraction patterns Fourier spectrum and analysis of the intensity at zero spatial frequency. The proposed method has been validated in numerical simulation.
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Kumar, S. Santosh, Cheng Li, Chase E. Christen, Christopher J. Hogan, Steven A. Fredericks, and Jiarong Hong. "Automated droplet size distribution measurements using digital inline holography." Journal of Aerosol Science 137 (November 2019): 105442. http://dx.doi.org/10.1016/j.jaerosci.2019.105442.

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Falgout, Zachary, Yi Chen, and Daniel R. Guildenbecher. "Improving the spatial dynamic range of digital inline particle holography." Applied Optics 58, no. 5 (2018): A65. http://dx.doi.org/10.1364/ao.58.000a65.

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Kim, Kyoohyun, and YongKeun Park. "Fourier transform light scattering angular spectroscopy using digital inline holography." Optics Letters 37, no. 19 (2012): 4161. http://dx.doi.org/10.1364/ol.37.004161.

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Deng, Qinghua, Weihua Li, Xuemin Wang, et al. "High-resolution terahertz inline digital holography based on quantum cascade laser." Optical Engineering 56, no. 11 (2017): 1. http://dx.doi.org/10.1117/1.oe.56.11.113102.

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Dissertations / Theses on the topic "Digital inline holography"

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Burns, Nicholas. "Automated analysis system for the study of digital inline holograms of aquatic particles." Thesis, University of Aberdeen, 2011. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=166951.

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The work embodied in this thesis describes software techniques developed to analyse digital inline holograms of suspended particle fields, particularly in aquatic environ- ments. The primary motivation behind this work has been development of tech- niques to extract useable information from individual holograms within holovideos, producing focused silhouettes of recorded plankton and other particulates with min- imal user intervention. Two automated focusing algorithms are developed and presented in this work, both of which obtain comparable results for holograms of sparse plankton populations. The first approach is based on rectangular regions of interest (ROIs), which are aligned to (x, y) dimensions, and localise particles within the two-dimensional recon- structed planes obtained from holovideo frames. Due to poor immunity to particle merging when applied to denser particle fields, a second approach was developed using arbitrary polygons with which to localise particle positions in reconstructed planes. This new approach offers a greater immunity to the merging of particles lying in close proximity in the (x, y) dimensions of the hologram, and allows better particle localisation for high density particle holograms. Both ROI and polygon based particle localisation are explored to identify strengths and weaknesses, and complete automated scanning procedures developed in both cases. Examples are provided of typical output from automated scanning algorithms when applied to a number of sample holograms, and areas of weakness highlighted for future work.
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(9012413), Radhika Arvind Bhopatkar. "Analysis of Droplet Impact on a Liquid Pool." Thesis, 2020.

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Secondary atomization is very important in applications like IC engine and aircraft engine performance, agricultural sprays, and inkjet printing to name a few. In case of IC engines and aircraft engines, a good understanding of the modes of secondary atomization and the resultant drop size can contribute to improving the fuel injection and hence the efficiency of the engine. Similarly, with the help of appropriate secondary atomization desired agro-spray quality, ink usage and print quality can be achieved which would optimize the usage of chemicals and ink respectively and avoid any harmful effects on the environment.

One of the reasons for secondary atomization that occurs very often in most of the spray applications is the drop impact on a solid or liquid surface. Especially it is cardinal to understand the impact of a drop on a liquid film since even in case of impact of liquid drops on a solid surface ultimately the drops that are injected at a later time are going have a target surface as a thin liquid film on the solid base due to the accumulation of the previously injected drops. Analysis of drop impact on a liquid film with non-dimensional thickness ranging from 0.1 to 1 has been done thoroughly before (Cossali et al., 2004, Vander Waal et al., 2006, Moreira et al., 2010), however, analysis of drop impact on a liquid film with non-dimensional thickness greater than 1 is still in a rudimentary stage. This work focuses on determining the probability density functions for the secondary drop sizes for drops produced in case of drop impact on a liquid film while varying the h/d ratio beyond 1. The experimental set-up used to study drop impact includes a droplet generator and DIH system as mentioned in, Yao et al. (2017). The DIH set-up includes a CW laser, spatial filter, beam expander and a collimator as adapted from Guildenbecher et al. (2016). The height of drop impact is varied to vary the impact We, by adjusting the syringe height. Three fluids- DI-Water, ethanol and glycerol are tested for examining the effect of viscosity on the resultant drop sizes. Results are plotted with respect to viscosity, impact We and the non-dimensional film thickness, as the fragmentation of drops is directly associated to these parameters. Results indicate that majority of the secondary droplets lie in the size range of 25 µm to 50 µm. It is also observed that the tendency of secondary atomization from crown splashing increases with the increase in We and decreases with increase in Oh.

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Conference papers on the topic "Digital inline holography"

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Ryle, James P., Unnikrishnan Gopinathan, Susan McDonnell, Thomas J. Naughton, and John T. Sheridan. "Digital inline holography of biological specimens." In SPIE Optics + Photonics, edited by Bahram Javidi, Demetri Psaltis, and H. John Caulfield. SPIE, 2006. http://dx.doi.org/10.1117/12.680798.

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Feng, Shaodong, Mingjun Wang, and Jigang Wu. "Digital Inline Holographic Microscopy with Grating Illumination and Iterative Reconstruction." In Digital Holography and Three-Dimensional Imaging. OSA, 2016. http://dx.doi.org/10.1364/dh.2016.dth3f.1.

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Stoykova, Elena, Haowen Zhou, and Partha P. Banerjee. "Phase Retrieval by Transport of Intensity in Inline Digital Holography." In Digital Holography and Three-Dimensional Imaging. OSA, 2020. http://dx.doi.org/10.1364/dh.2020.hf2d.3.

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Etchepareborda, Pablo, Paul Connolly, Jan Henneberger, and Jonathan Crosier. "Distortion Free Angular Spectrum Method for Digital Inline Holographic Microscopy." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/dh.2022.th2a.3.

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Compact Space-Bandwidth Angular Spectrum Method (CSW-ASM) is introduced for a high resolution reconstruction of digital in-line holograms with spherical wave illumination solving the distortion issue observed when using an ASM with planar reconstruction wave approach.
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Wang, Lei, Yingchun Wu, Yue Zhao, and Xuecheng Wu. "Off-axis hologram simulation and reconstruction of particle in a pipe." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/dh.2022.w5a.56.

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The whole recording and reconstruction processes based on the ABCD transfer matrix of the digital off-axis holography through a pipe are researched. Comparisons of the simulations between inline and off-axis holography are presented.
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Li, Yun-Da, Qi Li, Jia-Qi Hu, and Yongpeng Zhao. "2D reconstruction of terahertz Gabor inline digital holography." In SPIE/COS Photonics Asia, edited by Cunlin Zhang, Xi-Cheng Zhang, and Masahiko Tani. SPIE, 2014. http://dx.doi.org/10.1117/12.2071005.

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Petrov, N. V., A. V. Belashov, S. S. Nalegaev, et al. "Local Optical Nonlinear Responses in Time-Resolved Inline Digital Holographic Measurements." In Digital Holography and Three-Dimensional Imaging. OSA, 2019. http://dx.doi.org/10.1364/dh.2019.w1a.7.

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Wu, Yingchun, Xuecheng Wu, Binwu Zhou, et al. "Coal Particle Measurement in a Pulverized Coal Flame with Digital Inline Holography." In Digital Holography and Three-Dimensional Imaging. OSA, 2013. http://dx.doi.org/10.1364/dh.2013.dw3a.3.

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Petrov, N. V., I. A. Shevkunov, A. V. Belashov, et al. "Time-Resolved Inline Digital Holography for Investigation of Noncollinear Pump Pulse-Induced Phase Variation." In Digital Holography and Three-Dimensional Imaging. OSA, 2017. http://dx.doi.org/10.1364/dh.2017.m3a.3.

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López, Ana Mª, Julia Lobera, Eva Roche, et al. "Digital Inline Holography Applied to the Velocity Analysis in a Large Volume Mixing Process." In Digital Holography and Three-Dimensional Imaging. OSA, 2017. http://dx.doi.org/10.1364/dh.2017.m4a.6.

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