A5024146428- Orbital Angular Momentum in Optics
- Digital Holography and Microscopy
- Advanced Optical Imaging Technologies
- Advanced Optical Sensing Technologies
- Optical and Acousto-Optic Technologies
- Photorefractive and Nonlinear Optics
- Random lasers and scattering media
- Coagulation and Flocculation Studies
- Optical Polarization and Ellipsometry
- Advanced optical system design
- Optical Systems and Laser Technology
- Force Microscopy Techniques and Applications
- Advanced Electron Microscopy Techniques and Applications
- Adaptive optics and wavefront sensing
- Electron and X-Ray Spectroscopy Techniques
- Optical Coherence Tomography Applications
- Photonic and Optical Devices
- Catalytic Processes in Materials Science
- Mesoporous Materials and Catalysis
Institute of Physics
2019-2021
Institute of Macromolecular Chemistry
2009
Taras Shevchenko National University of Kyiv
2008
In the work considered is Fourier-holography scheme with identical object and reference beams which possesses a self-associative image reconstruction feature, as signal processing device. Such device has to be characterized particularly signal-to-noise ratio (SNR) limit of detection (LD). The paper describes an approach that allows deriving SNR parameter from known properties scheme. Image quality in form visibility or average contrast (V=(I <sub...
Considered is a correlation method of forming specified distribution radiation energy over the target, particularly in optical tweezers wand. The exploits an interaction beforehand spatially modulated phase wand beam with synthesized hologram specific to modulation. obtained as convolution required field and cross-correlation function ideal real one. Because beams wave fronts modulation result such weakly dependent on difference beams. Examined possibility dynamic operation mode involving...
In the paper demonstrated is tuning effect of fine alignment on mode output in self-associative Fourier holography scheme. Theoretical analysis provided. Revealed that observed defined by input image structure, namely transform intensity. Developed method controlled system to achieve selection between phantom-like and fully associative data retrieval.
In the work presented is theoretical description of optimal focusing extended laser beam at long distances (over 1km). It shown that in general case condition does not coincide with formation waist. The approximation formulated, when coincides Obtained and experimental confirmation linear dependence minimum diameter spot from distance.
The paper describes the stabilizing effect of random phase diffuser applied at recording or synthesis Fourier hologram. is meant here as ability to keep quality image formed by hologram kinoform in terms preserving main structure intensity distribution under wavefront distortions different scale restoring beam. A theoretical explanation given converting convolution ideal with hardware function system from coherent non-coherent. Demonstrated are results computational and real experiments...
In the paper described is a method of transmission phase information by an optical signal which propagates through optically inhomogeneous medium. Phase represented as interference pattern two states object that deformed between state fixations. It proposed to pass and reference beams path in same direction when recording holograms states. this implementation, carries form system interfering (holograms) subject minimal interference. And these contain undistorted about wavefronts beams....