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INVESTIGATION OF FIELDS IN FOCAL REG

VECTORIAL EFFECTS IN HIGH-NA FOCUSIN

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VECTORIAL EFFECTS IN HIGH-NA FOCUSING SYSTEMS
Time: 2018-09-15 11:45Source: infocrops.comWriter: infocrops
In high-NA focusing systems, the vectorial nature of light starts to play a non-negligible role and it may affect the focal spot. Input polarization, the direction-dependent Fresnel coefficients at the surfaces and the diffraction effect that dominates the propagation of the field in the focal zone must all be considered in order to make reasonable predictions about high-NA setups.
 
In VirtualLab, all these effects can be included for the investigation of your system, and the focal fields can be calculated very efficiently.
 
Advanced PSF Calculation in a High-NA Lens System

 
When a linearly polarized Gaussian beam is focused by a high-NA aspheric lens, the PSF in the focal plane shows an asymmetry due to vectorial effects.
 
 
High-NA Focusing by Off-Axis Parabolic Mirror


 
 In high-NA focusing situations, e.g. with parabolic mirrors, it is demonstrated that input fields with different polarizations lead to different focal spots.
 
 
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