Journal
OPTICS EXPRESS
Volume 23, Issue 15, Pages 20040-20050Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.020040
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Funding
- ERC [278560]
- EC [EC project MULTI (317707]
- EU [323901]
- European Research Council (ERC) [278560] Funding Source: European Research Council (ERC)
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Time-frequency decomposition techniques, borrowed from the signal-processing field, have been adapted and applied to the analysis of 2D oscillating signals. While the Fourier-analysis techniques available so far are able to interpret the information content of the oscillating signal only in terms of its frequency components, the time-frequency transforms (TFT) proposed in this work can instead provide simultaneously frequency and time resolution, unveiling the dynamics of the relevant beating components, and supplying a valuable help in their interpretation. In order to fully exploit the potentiality of this method, several TFTs have been tested in the analysis of sample 2D data. Possible artifacts and sources of misinterpretation have been identified and discussed. (C) 2015 Optical Society of America
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