Strehl ratio and optimum focus of high-numerical-aperture beams
We analytically calculate the focus setting for a beam with a high numerical aperture (NA) that optimizes its Strehl ratio in the case of small aberrations up to the ’just’ diffraction-limited value (Strehl ratio ≥0.80). The optimum focus setting deviates from the one that follows from a minimizatio...
| Published in: | Journal of the European Optical Society-Rapid Publications |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2007-01-01
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| Subjects: | |
| Online Access: | https://jeos.edpsciences.org/articles/jeos/pdf/2007/01/jeos20070207008.pdf |