When a laser beam is incident on many small objects such as lycopodium powder, the resulting diffraction pattern is similar to the diffraction pattern of a small circular aperture (Airy's ... Without ...

It is also shown that helical magnetic fields can be induced using ... fixed circular aperture of 0.75 μm radius (that is, no plasma; Fig. 6b), it is clear that the diffraction effects play ...

What is the Diffraction Limit? The diffraction limit is a fundamental barrier in optical microscopy that sets the minimum size of features that can be resolved using conventional ... after passing ...