@article{Wang:23,
  author = {Jingyi Wang and Xingyu Su and Tong Liu and Ling Hong and Haoxu Guo and Xiaodong Qiu and Yuan Ren and Lixiang Chen},
  journal = {Opt. Express},
  keywords = {Cylindrical vector beams; Doppler effect; Free space optics; Laser beam propagation; Structured light; Vector beams},
  number = {10},
  pages = {16442--16450},
  publisher = {Optica Publishing Group},
  title = {Turbulence-resilient detection of the rotational Doppler effect with cylindrical vector beams},
  volume = {31},
  month = {May},
  year = {2023},
  url = {https://opg.optica.org/oe/abstract.cfm?URI=oe-31-10-16442},
  doi = {10.1364/OE.490063},
  abstract = {Recent years have witnessed a growing research interest in the rotational Doppler effect associated with orbital angular momentum of light, emerging as a powerful tool to detect rotating bodies in remote sensing. However, this method, when exposed to the turbulence in a realistic environment, has some severe limitations, leading to the unrecognizable rotational Doppler signals overwhelmed in background noise. Here we put forward a concise yet efficient method that enables the turbulence-resilient detection of the rotational Doppler effect with cylindrical vector beams. Specifically, by adopting the polarization-encoded dual-channel detection system, the low-frequency noises caused by turbulence can be individually extracted and subtracted, and thus mitigate the effect of turbulence. We demonstrate our scheme by conducting proof-of-principle experiments, whose results manifest the feasibility of a practical sensor to detect the rotating bodies in non-laboratory conditions.}
}