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Single-shot imaging of microscopic dynamic scenes at 5 THz frame rates by time and spatial frequency multiplexing

Authors
Moon, JunghoYoon, SeokchanLim, Yong-SikChoi, Wonshik
Issue Date
17-2월-2020
Publisher
OPTICAL SOC AMER
Citation
OPTICS EXPRESS, v.28, no.4, pp.4463 - 4474
Indexed
SCIE
SCOPUS
Journal Title
OPTICS EXPRESS
Volume
28
Number
4
Start Page
4463
End Page
4474
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/57634
DOI
10.1364/OE.383038
ISSN
1094-4087
Abstract
Femtosecond-scale ultrafast imaging is an essential tool for visualizing ultrafast dynamics in many scientific fields. We present a single-shot ultrafast microscopy that can capture more than a dozen frames at a time with the frame rate of 5 THz. We combine a spatial light modulator and a custom-made echelon for efficiently generating a large number of reference pulses with designed time delays and propagation angles. The single-shot recording of the interference image between these reference pulses with a sample pulse allows us to retrieve the stroboscopic images of the dynamic scene at the timing of the reference pulses. We demonstrated the recording of 14 temporal snapshots at a time, which is the largest to date, with the optimal temporal resolution set by the laser output pulse. This will have profound impacts on uncovering the interesting spatio-temporal dynamics yet to be explored. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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