Masud Mansuripur, Lifeng Li, Wei-Hung Yeh
Last month we began a discussion
of diffraction-limited focusing
of a laser beam for the purpose
of scanning a surface. We
discussed the size of the focused
spot and the corresponding depth
of focus under various circumstances.
This month's column continues
the discussion, concentrating on focusing through solid immersion
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Publish Date: 01 June 1998
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