Title :
Differential phase contrast optical microscope with 1 Ã\x85-depth resolution
Author :
Wickramasinghe, H.K. ; Ameri, S. ; See, C.W.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
A differential phase contrast optical microscope is described showing a depth resolution of 1 Å, in a bandwidth of 10 kHz. The system, which is based on a laser interferometer, has a phase sensitivity of 10¿3 rad. With careful design, this value can be improved by an order of magnitude.
Keywords :
light interferometry; optical microscopes; 10 kHz bandwidth; AngstromA-depth resolution; differential phase contrast optical microscope; laser interferometer; phase sensitivity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820668
