Holography is a powerful tool for three-dimensional imaging. However, in explosive, supersonic, hypersonic, cavitating, or ionizing environments, shock-waves and density gradients impart phase distortions that obscure objects in the field-of-view. Capturing time-resolved information in these environments also requires ultra-high-speed acquisition. To reduce phase distortions and increase imaging rates, we introduce an ultra-high-speed phase conjugate digital in-line holography (PCDIH) technique. In this concept, a coherent beam passes through the shock-wave distortion, reflects off a phase conjugate mirror, and propagates back through the shock-wave, thereby minimizing imaging distortions from phase delays. By implementing the method using a pulse-burst laser setup at up to 5 million-frames-per-second, time-resolved holograms of ultra-fast events are now possible. This technique is applied for holographic imaging through laser-spark plasma-generated shock-waves and to enable three-dimensional tracking of explosively generated hypersonic fragments. Simulations further advance our understanding of physical processes and experiments demonstrate ultra-high-speed PCDIH techniques for capturing dynamics.
Mazumdar, Yi Chen, Smyser, Michael E., Heyborne, Jeffery D., Slipchenko, Mikhail N., & Guildenbecher, Daniel R. (2020). Megahertz-rate shock-wave distortion cancellation via phase conjugate digital in-line holography. Nature Communications, 11(1). https://doi.org/10.1038/s41467-020-14868-y
Mazumdar, Yi Chen, Smyser, Michael E., Heyborne, Jeffery D., et al., "Megahertz-rate shock-wave distortion cancellation via phase conjugate digital in-line holography," Nature Communications 11, no. 1 (2020), https://doi.org/10.1038/s41467-020-14868-y
@article{osti_1619579,
author = {Mazumdar, Yi Chen and Smyser, Michael E. and Heyborne, Jeffery D. and Slipchenko, Mikhail N. and Guildenbecher, Daniel R.},
title = {Megahertz-rate shock-wave distortion cancellation via phase conjugate digital in-line holography},
annote = {Abstract Holography is a powerful tool for three-dimensional imaging. However, in explosive, supersonic, hypersonic, cavitating, or ionizing environments, shock-waves and density gradients impart phase distortions that obscure objects in the field-of-view. Capturing time-resolved information in these environments also requires ultra-high-speed acquisition. To reduce phase distortions and increase imaging rates, we introduce an ultra-high-speed phase conjugate digital in-line holography (PCDIH) technique. In this concept, a coherent beam passes through the shock-wave distortion, reflects off a phase conjugate mirror, and propagates back through the shock-wave, thereby minimizing imaging distortions from phase delays. By implementing the method using a pulse-burst laser setup at up to 5 million-frames-per-second, time-resolved holograms of ultra-fast events are now possible. This technique is applied for holographic imaging through laser-spark plasma-generated shock-waves and to enable three-dimensional tracking of explosively generated hypersonic fragments. Simulations further advance our understanding of physical processes and experiments demonstrate ultra-high-speed PCDIH techniques for capturing dynamics.},
doi = {10.1038/s41467-020-14868-y},
url = {https://www.osti.gov/biblio/1619579},
journal = {Nature Communications},
issn = {ISSN 2041-1723},
number = {1},
volume = {11},
place = {United Kingdom},
publisher = {Nature Publishing Group},
year = {2020},
month = {02}}