Abstract:

For improving the transverse resolution, 3-zone phase-only filters are designed at the special Strehl ratio S, which is the ratio of the maximum intensity of the entral core of the superresolving pattern to the Airy pattern, and the special resolution parameter G, which is the ratio between the first minimum of the transverse intensity of the superresolving pattern and the unobstructed pattern. To suppress the strong sidelobe intensity, these phase-only filters are used in the confocal scanning microscopy syste with good resolving effects achieved.

Key words: phase-only filters, superresolution, confocal scanning microscopy