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
Дослідити та розробити методи аналізу структури нанооб'єктів та відображення інформації когерентними джерелами світла
Head
Kryuchyn Andrii A., Доктор технічних наук
Registration Date
12-02-2024
Organization
Institute for Information Recording NASU
popup.description1
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
