Macroscopic laser pulling based on the Knudsen force in rarefied gas

Optical pulling is an attractive concept due to the counterintuitive feature, the profound mechanism underneath and promising applications. In recent ten years, optical pulling of micro-nano objects have been fully demonstrated. However, optical pulling of a macroscopic object is challenging. Herein...

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Veröffentlicht in:Optics express 2023-01, Vol.31 (2), p.2665-2674
Hauptverfasser: Wang, Lei, Wang, Shige, Zhao, Qiuling, Wang, Xia
Format: Artikel
Sprache:eng
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Zusammenfassung:Optical pulling is an attractive concept due to the counterintuitive feature, the profound mechanism underneath and promising applications. In recent ten years, optical pulling of micro-nano objects have been fully demonstrated. However, optical pulling of a macroscopic object is challenging. Herein, laser pulling of a macroscopic object is presented in rarefied gas. The pulling force is originated from the Kundsen force when a gauss laser beam irradiates a macroscopic structure composed of the absorptive bulk cross-linked graphene material and a SiO layer. A torsional pendulum device qualitatively presents the laser pulling phenomenon. A gravity pendulum device was used to further measure the pulling force that is more than three orders of magnitudes larger than the radiation pressure. This work expands the scope of optical pulling from microscale to macroscale and provides an effective technique approach for macroscopic optical manipulations.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.480019