Microcantilever-based current balance for precise measurement of the photon force.

Sci Rep

Department of Nanometrology, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372, Wrocław, Poland.

Published: January 2023

We present a method for the quantitative determination of the photon force (PF)-the force generated by the radiation pressure of photons reflected from the surface. We propose an experimental setup integrating innovative microelectromechanical system (MEMS) optimized for the detection of photon force (pfMEMS). An active microcantilever was used as the force detector, while the measurement was conducted in a closed-loop setup with electromagnetic force compensation. In opposition to our previous works, this measurement method provides quantitative not qualitative assessment of PF interaction. Final current-balance setup is suitable for light sources from tens of microwatts to few watts. In our article, we present the results of the performed experiments, in which we measured the PF interactions in the range up to 67.5 pN with resolution of 30 fN in the static measurement.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9832140PMC
http://dx.doi.org/10.1038/s41598-022-27369-3DOI Listing

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