Transient vibration imaging with time-resolved synthetic holographic confocal microscopy
Abstract
We introduce a new modality for dynamic phase imaging in confocal microscopy based on synthetic optical holography. By temporal demultiplexing of the detector signal into a series of holograms, we record time-resolved phase images directly in the time domain at a bandwidth as determined by the photo detector and digitizer. We demonstrate our method by optical imaging of transient vibrations in an atomic force microscope cantilever with 100 ns time resolution, and observe the dynamic deformation of the cantilever surface after excitation with broadband mechanical pulses. Temporal Fourier transform of a single data set acquired in 4.2 minutes yields frequency and mode profile of all excited out-of-plane vibration modes with sub-picometer vertical sensitivity and sub-micrometer lateral resolution. Our method has the potential for transient and spectroscopic vibration imaging of micromechanical systems at nano- and picosecond scale time resolution.
Keywords
Cite
@article{arxiv.1904.04155,
title = {Transient vibration imaging with time-resolved synthetic holographic confocal microscopy},
author = {Martin Schnell and P. Scott Carney and Rainer Hillenbrand},
journal= {arXiv preprint arXiv:1904.04155},
year = {2019}
}
Comments
(c) 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. https://doi.org/10.1364/OE.26.026688