Temporal super-resolution high-speed holographic video recording based on switching reference lights and angular multiplexing in off-axis digital holography

Wataru Anzai; Takashi Kakue; Tomoyoshi Shimobaba; Tomoyoshi Ito

doi:10.1364/OL.460591

Optics Letters
Vol. 47,
Issue 13,
pp. 3151-3154
(2022)
•https://doi.org/10.1364/OL.460591

Temporal super-resolution high-speed holographic video recording based on switching reference lights and angular multiplexing in off-axis digital holography

Wataru Anzai, Takashi Kakue, Tomoyoshi Shimobaba, and Tomoyoshi Ito

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Wataru Anzai, Takashi Kakue, Tomoyoshi Shimobaba, and Tomoyoshi Ito, "Temporal super-resolution high-speed holographic video recording based on switching reference lights and angular multiplexing in off-axis digital holography," Opt. Lett. 47, 3151-3154 (2022)

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Abstract

We develop a temporal super-resolution high-speed holographic video recording method based on the angular multiplexing in off-axis digital holography that can achieve an acquisition rate greater than the frame rate of image sensors. We realize a high-speed switching of reference lights with different incident angles using two acousto-optic modulators. We successfully double the frame rate of the hologram recording using a rotating circular protractor and demonstrate its practical application in compressed gas flow injection; we achieve a frame rate of 175,000 fps using a high-speed image sensor triggered at 87,500 Hz.

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Supplementary Material (6)

Name	Description
Supplement 1	Experimental setup for the proposed method
Visualization 1	Intensity distribution of reconstructed images of the rotating circular protractor obtained with angular multiplexing when the image sensor was triggered at 6,000 Hz.
Visualization 2	Intensity distribution of reconstructed images of the rotating circular protractor obtained without angular multiplexing when the image sensor was triggered at 6,000 Hz.
Visualization 3	Intensity distribution of reconstructed images of the rotating circular protractor obtained with angular multiplexing when the image sensor was triggered at 87,500 Hz.
Visualization 4	Intensity distribution of reconstructed images of the rotating circular protractor obtained without angular multiplexing when the image sensor was triggered at 87,500 Hz.
Visualization 5	Phase distribution of reconstructed images of gas injection obtained using the proposed method when the image sensor was triggered at 87,500 Hz.

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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