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Ultra-Scale Photonic Control and Measurement Group
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2023 Ultrafast line-scan TOF camera for imaging structures and dynamics in micro-scale devices is published at Light: Science & Applications (Feb 15, 2023)
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작성일 2023-02-15 21:21
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Our work on ultrafast line-scan TOF camera is published at Light: Science & Applications. High-speed and high-resolution imaging of surface profiles is critical for the investigation of various structures and mechanical dynamics of micro- and nano-scale devices. However, direct time-domain imaging of displacements and mechanical motions has been a missing element in studying full-field structural and dynamic behaviors. In this work, by exploiting the electro-optic sampling with a frequency comb, we demonstrate a line-scan TOF camera that can simultaneously measure the TOF changes of more than 1000 spatial coordinates with hundreds megapixels/s pixel-rate and sub-nanometre axial resolution over several millimeters field-of-view. This unique combination of performances enables fast and precise imaging of both complex structures and dynamics in three-dimensional devices and mechanical resonators. |
Y. Na et al, "Massively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging," Light Sci. Appl. 12, 44 (2023)