Digital In-line holography (DIH) is a method that can be used to capture three-dimensional information from a scene using a single camera with a two-dimensional imaging sensor and a single laser. The captured digital hologram can be numerically refocused to different focal planes to determine the x, y, and z position of particles in the image using custom software. By processing multiple frames and using custom fast particle-tracking code, it is possible to determine the three-dimensional velocity of particles, making this technique ideal for sparse gas-liquid or gas-solid multiphase flows.
This technology can be applied to conduct time-resolved studies of typical fluids and liquid metal columns in shock-induced cross-flows. In addition DIH can be used to study molten aluminum particles in solid rocket propellants. In comparison to other particle sizing diagnostics, DIH can be applied in situ during combustion at single-shot frame rates or at kHz to MHz rates. Numerical contributions enable identification of higher spatial dynamic ranges and bias-corrected size probability distributions. Distributions from high quality laser diagnostics can also be used for model validation.
Current work focuses on applying holography to applications with phase distortions due to density difference and shock-waves. However, by utilizing phase conjugate digital in-line holography, it is possible to invert the phase and pass the beam back through the object field, thereby cancelling shock-wave phase distortions. We have recently shown that this four-wave-mixing technique can be implemented at ultra-high-speeds up to 5 million-frames-per-second using a Quazimodo pulse burst laser and Shimadzu cameras. Numerical algorithms related to this technique are also being explored.
Selected Publications
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- (*) Y. C. Mazumdar, M. E. Smyser, J. D. Heyborne, M. N. Slipchenko, and D. R. Guildenbecher, “Megahertz-rate Shock-wave Distortion Cancellation via Phase Conjugate Digital In-line Holography,” Nature Communications, vol. 11, 1129, 2020. [https://doi.org/10.1038/s41467-020-14868-y]
- (*) M. Arienti, M. Ballard, M. Sussman, Y. C. Mazumdar, J. L. Wagner, P. A. Farias, and D. R. Guildenbecher, “Comparison of Simulation and Experiments for Multimode Aerodynamic Breakup of a Liquid Metal Column in a Shock-Induced Cross-Flow,” Physics of Fluids, Vol. 31 (8), 082110, 2019. [https://doi.org/10.1063/1.5099589].
- Z. Falgout, Y. Chen, and D. R. Guildenbecher, “Improving the spatial dynamic range of digital inline particle holography,” Applied Optics, Vol. 58 (5), pp. A65-A73, 2019. [https://doi.org/10.1364/AO.58.000A65]
- Y. Chen, J. L. Wagner, P. A. Farias, E. P. DeMauro, and D. R. Guildenbecher, “Galinstan Liquid Metal Breakup and Droplet Formation in a Shock-induced Cross-flow,” International Journal of Multiphase Flow, vol. 106, pp. 147-163, 2018. [https://doi.org/10.1016/j.ijmultiphaseflow.2018.05.015]
- M. S. Powell, I. W. Gunduz, W. Shang, J. Chen, S. F. Son,Y. Chen, and D. R. Guildenbecher, “Agglomerate Sizing in Aluminized Propellants Using Digital Inline Holography and Traditional Diagnostics,” Journal of Propulsion and Power, vol. 34, no. 4, pp. 1002-1014, 2018. [https://doi.org/10.2514/1.B36859]
- Y. Chen, D. R Guildenbecher, K. N. G. Hoffmeister, M. A. Cooper, H. L. Stauffacher, M. S. Oliver, and E. B. Washburn, “Study of Aluminum Particle Combustion in Solid Propellant Plumes using Digital In-line Holography and Imaging Pyrometry,” Combustion and Flame, vol. 182C, pp. 225-237, 2017. [http://dx.doi.org/10.1016/j.combustflame.2017.04.016]
- (*) T. M. Evans, A. W. Marsh, J. Uzodinma, D. R. Guildenbecher, and Y. C. Mazumdar, “Digital Phase-Sensitive Holography for Numerical Shock-wave Distortion Cancellation,”58th AIAA Aerospace Sciences Meeting, AIAA Scitech, paper AIAA 2020-1972, 2020. [https://doi.org/10.2514/6.2020-1972]
- Y. Chen, J. D. Heyborne, D. R. Guildenbecher, M. E. Smyser, and M. N. Slipchenko, “Ultra-high-speed Pulse-burst Phase Conjugate Digital In-line Holography for Imaging Through Shock-wave Distortions,” 57th AIAA Aerospace Sciences Meeting, AIAA SciTech, 2019. [https://doi.org/10.2514/6.2019-1602]
- Y. Chen, J. L. Wagner, P. A. Farias and D. R Guildenbecher, “Study of Galinstan Liquid Metal Breakup Using Backlit Imaging and Digital In-line Holography,” 14th International Conference on Liquid Atomization and Spray Systems (ICLASS), 2018. [http://ilasseurope.org/events/iclass-2018/]
- Z. Falgout,Y. Chen and D. R. Guildenbecher, “Improving the Detectable Particle Size Floor of Digital In-line Holography,” 14th International Conference on Liquid Atomization and Spray Systems (ICLASS), 2018. [http://ilasseurope.org/events/iclass-2018/]
- Y. Chen, J. D. Heyborne, and D. R. Guildenbecher, “Time-resolved Digital In-line Holography and Pyrometry for Aluminized Solid Rocket Propellants,” OSA Imaging and Applied Optics Conference: Laser Applications to Chemical, Security and Environmental Analysis, paper LTu3C.5, 2018. [Invited Talk] [https://doi.org/10.1364/LACSEA.2018.LTu3C.5]
- Y. Chen and D. R. Guildenbecher, “Quantitative, Bias-Corrected Measurements of Droplet Position, Size and Velocity with Digital In-line Holography,” 29th Annual Conference on Liquid Atomization and Spray Systems, 2017. [http://www.ilass.org/2/database/Detail.aspx?AbstractID=1117] [Marshall Award for Best Paper in ILASS, Invited Talk]
- M. Arienti,Y. Chen, J. L. Wagner and D. R. Guildenbecher, “Aerodynamic Breakup of Liquid Metal in a Shock-Induced Crossflow,” 29th Annual Conference on Liquid Atomization and Spray Systems, 2017.
- Y. Chen, E. P. DeMauro, J. L. Wagner, M. Arienti, D. R. Guildenbecher, P. Farias, T. W. Grasser, P. Sanderson, S. Albert, A. Turpin, W. Sealy, and R. S. Ketchum, “Aerodynamic Breakup and Secondary Drop Formation for a Liquid Metal Column in a Shock-Induced Cross-Flow,”55th AIAA Aerospace Sciences Meeting, paper AIAA2017-1892, 2017. [http://dx.doi.org/10.2514/6.2017-1892]
- Y. Chen, D. R. Guildenbecher, K. N. Hoffmeister, P. E. Sojka, “Digital Imaging Holography and Pyrometry of Aluminum Drop Combustion in Solid Propellant Plumes,” OSA Imaging and Applied Optics Conference: Laser Applications to Chemical, Security and Environmental Analysis, paper LT4F.2, 2016. [http://dx.doi.org/10.1364/LACSEA.2016.LT4F.2]
- D. R. Guildenbecher, J. L. Wagner, J. D. Olles, Y. Chen, E. P. Demauro, P. Farias, T. W. Grasser, and P. E. Sojka, “kHz Rate Digital In-line Holography Applied to Quantify Secondary Droplets from the Aerodynamic Breakup of a Liquid Column in a Shock-Tube,” 54th AIAA Aerospace Sciences Meeting, AIAA SciTech, Paper AIAA 2016-1044, 2016. [http://dx.doi.org/10.2514/6.2016-1044]