Effect of Amplitude and Phase Distortions on the Formation of Light Fields with Rotating Intensity Distribution

Vorontsov, E. N.; Котова, С. П.; Losevsky, N. N.; Прокопова, Д. В.; Samagin, S. A.

doi:10.3103/s1068335618030028

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…[15,16] where the dependence of rotation angle for intensity distribution of so-called "twolobed fields" were investigated in dependence on the depth of focus for spiral beams as well as influence of amplitude and phase distortions on the formation of the light field with the intensity rotation was established. [17]. Thereby, in latest research [18] authors proposed a new concept of full-field topographic microscopy based on array of self-interfered optical vortices enabling a reference-free displacement and 3D shape measurement of reflective samples due to a very high rotation sensitivity to defocusing which can be applied to an accurate depth estimation in conventional optical microscope [19,20].…”

Section: Introductionmentioning

confidence: 99%

Determination of microrelief of the sample by singular beams superposition

Sokolenko¹,

Shostka²,

Karakchieva³

et al. 2019

Computer Optics

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In present paper we propose easy way to implement method of interfering vortices with opposite topological charge for the real time determination of the thickness and information about the surface of studied samples with the resolution up to 7 nanometers. The determination of the characteristics of the medial cross-section of submicron-objects becomes possible due to phase sensitivity of interfering singular beams to the slightest changes in the optical path difference between them. The dependence of rotational angle of resulting interference pattern in case of different sample thickness for two singular beams superposition is considered in detail.

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Section: Introductionmentioning

confidence: 99%

Determination of microrelief of the sample by singular beams superposition

Sokolenko¹,

Shostka²,

Karakchieva³

et al. 2019

Computer Optics

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“…It was found that the instrumental functions of different micro-objectives differ significantly from each other, most have a strongly nonuniform spatial distribution of the radiation intensity in a parallel beam. With the use of an objective with the radiation intensity spatial distribution profile closest to a flat one, for a number of original calculated phase masks [4] the efficiency of the microscope objective instrumental function to the two-lobe function conversion was estimated. It was found that taking into account the actual microscope objective instrumental function when calculating the phase masks allows to increase significantly the conversion efficiency.…”

mentioning

confidence: 99%

The study of a new family of phase masks for three-dimensional fluorescence nanoscopy

et al. 2018

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The question of the axial coordinate determination accuracy is quite sophisticated in far field 3D fluorescence nanoscopy. The accuracy of a point emitter axial coordinate reconstruction depends among other things on the conversion efficiency of the phase mask and the microscope objective instrumental function. It was found that the instrumental functions of different microscope objectives differ significantly from each other, most have a strongly non-uniform spatial distribution of the radiation intensity in a parallel beam created by an objective focused on a point emitter. It was shown that taking into account the actual microscope objective instrumental function when calculating the phase masks allows to increase significantly the axial coordinate reconstruction accuracy.

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