Partially coherent sources which produce the same far zone optical force as a laser beam

TL;DR

This paper demonstrates that partially coherent Gaussian Schell model sources can produce the same optical forces as laser beams, enabling less invasive light-matter interactions in biological samples by controlling thermal effects.

Contribution

It shows that partially coherent sources can replicate laser beam optical forces, offering a new approach to reduce invasiveness in biological manipulation.

Findings

Partially coherent GSMS produce identical optical forces as lasers.

GSMS can reduce thermal heating in biological samples.

Control of light-matter interaction with lower intensity sources.

Abstract

On applying a theorem previously derived by Wolf and Collett, we demonstrate that partially coherent Gaussian Schell model uctuating sources (GSMS) produce exactly the same optical forces as a fully coherent laser beam. We also show that this kind of sources helps to control the light-matter interaction in biological samples which are very sensitive to thermal heating induced by higher power intensities; and hence the invasiveness of the manipulation. This is a consequence of the fact that the same photonic force can be obtained with a low intensity GSMS as with a high intensity laser beam.