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Reflective fiber-optics tweezer

Reflective optical trap design
Image: courtesy of FB
Fig. 1. Cross sections (not to scale) of a novel reflective four-fibers optical tweezer analyzed by Bragheri F et al 2008: left panel - across the optical axis (the fiber core position is shown for the fiber #1), right panel - along the optical axis. Gray arrows denote the flow of the light power.   The figure reproduced by permission of OSA from Bragheri F et al 2008 with modifications. [FB]
Reflective optical trap simulation
Image: courtesy of FB

Fig. 2. A map of the escape energy per unit power of the incident light near the tip of the novel optical tweezer shown above (Bragheri F et al 2008). The position of a trapped particle is indicated by a black circle. Coordinate z represents the distance from the tip of the tweezer.   The figure reproduced by permission of OSA from Bragheri F et al 2008 with modifications. [FB]
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