Sharing a Common Origin Between the Rotational and Linear Doppler Effects

@article{Fang2017SharingAC,
  title={Sharing a Common Origin Between the Rotational and Linear Doppler Effects},
  author={Liang Fang and Miles J. Padgett and Jian Wang},
  journal={Laser \& Photonics Reviews},
  year={2017},
  volume={11}
}
The well‐known linear Doppler effect arises from the linear motion between source and observer, while the less well‐known rotational Doppler effect arises from the rotational motion. Here, we present both theories and experiments illustrating the relationship between the rotational and linear Doppler effects. A spiral phaseplate is used to generate a light beam carrying orbital angular momentum and the frequency shift is measured arising from its rotational and/or linear motion. By considering… 
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49 Citations
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49 Citations

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Recent studies have highlighted that the rotational Doppler effect arises from rotational motion and optical orbital angular momentum (OAM), which has potential to detect rotating objects. Here, we…
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This work conducts a proof of principle experiment and successfully measure the rotational velocity (magnitude and direction) of a moving isotropic particle and opens the path to vectorial Doppler metrology for detection of universal motion vectors with vectorially structured light.
Rotational Doppler shift upon reflection from a right angle prism
This Letter reports the observation of a rotational Doppler shift on reflected beams carrying Orbital Angular Momentum (OAM). More precisely, we study the beat frequency of two optical beams carrying…
Rotational Doppler effect detection by LG beams with a nonzero radial index.
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This study theoretically analyzed the reason of intensity enhancement of a nonzero radial index LG beam and verified the conclusion in a variable control experiment, providing a new aspect of LG beams that can be considered in rotational speed detection based on RDE.
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