SR
S.B. Raghunathan
Authored
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Experimental demonstration of an intensity minimum at the focus of a laser beam created by spatial coherence
Application to the optical trapping of dielectric particles
In trying to manipulate the intensity distribution of a focused field, one typically uses amplitude or phase masks. Here we explore an approach, namely, varying the state of spatial coherence of the incident field. We experimentally demonstrate that the focusing of a Bessel-corre
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