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PreprintCC BY 4.0arXiv

Multimode radiation pressure actuation of a mechanical resonator using a spatial mode sorter

  • Morgan E. Choi
  • Daniel Allepuz-Requena
  • Diego Torres-Barajas
  • Neshat Sadafi
  • Dalziel J. Wilson
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Abstract

Multimode optomechanical scattering is ubiquitous in free-space imaging protocols, but its radiation pressure counterpart is challenging to detect with extended objects. Here we demonstrate radiation pressure actuation of a nanomechanical membrane using dynamically structured light from a spatial mode demultiplexer (SPADE). Using single- and two-mode illumination, we directly image the position-dependent intermodal coupling between Hermite-Gauss (HG) modes as mediated by the membrane's motion. As an application, we use multimode radiation pressure feedback to simultaneously cool two nearly degenerate membrane modes. Our results are applicable to diverse mechanical systems and serve as a stepping stone to SPADE-based quantum optomechanics.

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Cite

BibTeXRIS
BibTeX
@misc{choi2026multimode,
  title = {{Multimode radiation pressure actuation of a mechanical resonator using a spatial mode sorter}},
  author = {Morgan E. Choi and Daniel Allepuz-Requena and Diego Torres-Barajas and Neshat Sadafi and Dalziel J. Wilson},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.38127},
  eprint = {2609.38127},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.38127},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Multimode radiation pressure actuation of a mechanical resonator using a spatial mode sorter
AU  - Morgan E. Choi
AU  - Daniel Allepuz-Requena
AU  - Diego Torres-Barajas
AU  - Neshat Sadafi
AU  - Dalziel J. Wilson
PY  - 2026
DA  - 2026/09/29
PB  - arXiv
DO  - 10.48550/arxiv.2609.38127
UR  - https://arxiv.org/abs/2609.38127
AB  - Multimode optomechanical scattering is ubiquitous in free-space imaging protocols, but its radiation pressure counterpart is challenging to detect with extended objects. Here we demonstrate radiation pressure actuation of a nanomechanical membrane using dynamically structured light from a spatial mode demultiplexer (SPADE). Using single- and two-mode illumination, we directly image the position-dependent intermodal coupling between Hermite-Gauss (HG) modes as mediated by the membrane's motion. As an application, we use multimode radiation pressure feedback to simultaneously cool two nearly degenerate membrane modes. Our results are applicable to diverse mechanical systems and serve as a stepping stone to SPADE-based quantum optomechanics.
ER  -