Wavefront dislocations and phase image formation inside diffraction spot

Alexander V. Tavrov; Vladimir P. Tychinsky

doi:10.1117/12.172614

1 March 1994 Wavefront dislocations and phase image formation inside diffraction spot

Alexander V. Tavrov, Vladimir P. Tychinsky

Proceedings Volume 2004, Interferometry VI: Applications; (1994) https://doi.org/10.1117/12.172614
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The question of informative character of special image points--wavefront dislocations, is discussed. They were observed in real phase images of microstructures, which had comparable and smaller linear dimensions than diffraction limit. According to the existing classification, phase patterns of the main types of wavefront dislocations were identified. Their influence on the phase imaging formation is investigated. The case of induced phase contrast due to considerable decrease, but not quite vanishing of the complex amplitude, is taken into consideration. The contour making and contrasting tendency in the presence of the combination of dislocations, is demonstrated. Observation of anomal small-size details in phase and polarization images and the possibility of their observation in general `functional' image, is discussed. The experimental pictures were obtained with the help of unique phase microscope `AiryScan' technique.

Citation Download Citation

Alexander V. Tavrov and Vladimir P. Tychinsky "Wavefront dislocations and phase image formation inside diffraction spot", Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); https://doi.org/10.1117/12.172614

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