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Tuesday, July 23, 2019

Photon momentum induced precision small forces: a static and dynamic check

Eberhard Manske, Thomas Fröhlich and Suren Vasilyan

Practical means of generation and calibration of the small precision forces in static and dynamic regimes around 1 Hz by the usage of radiation pressure effect from 1 W continuous wave visible (diode) laser light is presented. The additive effect of the transfer of photon momentum, caused by non-overlapping multiply reflecting laser beam locked within quasi-passive and/or active macroscopic cavity system, is employed. The effective laser power (partially trapped experimentally) is amplified such that the optically generated forces are increased from hundreds of pN up to sub-µN level. The results presented in this paper should be seen as a means for extending the edge of practically verifiable lower limits of SI-traceable force metrology.

DOI

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