Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.244302
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Funding
- NASA Innovative Advanced Concepts Program (NIAC) [80NSSC18K0867, 80NSSC19K0975]
- Taiwanese Ministry of Education Study Abroad Scholarship [1061110054]
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An optical beam rider making use of a light sail comprising two opposing diffraction gratings is experimentally demonstrated for the first time. We verify that the illuminated space-variant grating structure provides an optical restoring force, exhibiting stable oscillations when the bigrating is displaced from equilibrium. We further demonstrate parametric cooling by illuminating the sail with synchronized light pulses. This experiment enhances the technical feasibility of a laser-driven light sail based on diffractive radiation pressure.
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