Premium
Improved imaging of phase gradients in scanning optical microscopy
Author(s) -
Hamilton D. K.,
Sheppard C. J. R.,
Wilson T.
Publication year - 1984
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1984.tb02533.x
Subject(s) - detector , optics , phase (matter) , microscopy , reflection (computer programming) , materials science , phase imaging , physics , transmission (telecommunications) , computer science , quantum mechanics , programming language , telecommunications
SUMMARY Previous work has used a circular large area split detector for phase gradient imaging; it is shown that substituting an annular split detector offers improvements in frequency response, particularly for weak phase gradients. Transfer functions are calculated and transmission and reflection micrographs demonstrate the different imaging properties. Other forms of detector are also considered, some of these possessing certain advantages.