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Information × Registration Number 0224U002353, 0119U001105 , R & D reports Title Explore and develop methods for analyzing the structure of nanoobjects and displaying information by coherent light sources. popup.stage_title Head Kryuchyn Andrii A., Доктор технічних наук Registration Date 12-02-2024 Organization Institute for Information Recording NASU popup.description2 Original method of speckles suppression for laser projectors based on binary 1D DOE structures based on binary pseudo-random sequences, placed on flexible transparent strip has been developed. Original algorithm for method optimization was elaborated, which reduces complex problem of speckles minimization to a solution of simple linear systems of diophantine equations. Original mathematical model was developed for passive method of speckle reduction based on multimode optical fiber. Original system of uniform speckle-free illumination having active (2D DOE based on binary pseudorandom sequences) and passive optical element (2D rectangular array of prisms ) has been developed . A homogeneous rectangular light spot with a speckle contrast level less than 2% was obtained. A compact passive system of incoherent focusing based on a 2D array of prisms of different heights has been theoretically developed to focus light into rectangular speckle-free homogeneous rectangular light spot. The well-known coherent matrix method has been improved, which allows calculating the speckle contrast and distribution of the intensity of the speckle field without finding the eigenvalues of the matrix. A simulation of the propagation of femto-impulses of light through the probe of an optical near-field scanning microscope showed a weak distortion of the light impulse and a significant amplification of the field at the top of the nanostrip probe and its perspective in the studied Raman spectrum of nano-objects. The developed mathematical model of the excitation of a butterfly nano-antenna by the fundamental mode of a rectangular dielectric waveguide demonstrated the possibility of applying the methods of integral optics to the manufacture of highly efficient nanoprobes for nano-optics devices. Research results are published in 19 scientific papers (18 - in Scopus database and 8 -Q1 quartile) and 3 Ukraine patent applications have been submitted. Product Description popup.authors Butok Oleksandr M. Horbov Ivan V. Kryuchyn Andrii A. Lapchuk Anatolii S. Morozov Yevhen M. Pryhun Oleksandr V. popup.nrat_date 2024-02-12 Close