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Information × Registration Number 0223U002394, 0121U110910 , R & D reports Title Investigation of mechanisms of functional suppression of optoelectronic observation systems by powerful short laser pulses for development of effective protective technologies against damage of optoelectronic systems by laser radiation popup.stage_title Head Nehriiko Anatolii M., д.ф.-м.н. Registration Date 16-02-2023 Organization Institute of Physics of National Academy of Sciences of Ukraine popup.description2 The purpose of the work: to establish the mechanisms of the destructive action of pulsed laser radiation on video surveillance systems for the development of technologies for protecting systems from damage by laser radiation and to formulate criteria for the resistance of the video surveillance system to laser exposure. The object of research: video surveillance system of an unmanned aerial vehicle. During the research work, we set the limit of the energy value of the pulse, which can disable video cameras. This limit is around 1 mJ. At lower pulse energies, the camera stops working, but quickly recovers and starts working again in its usual mode. We analyzed the possibility of weakening powerful laser radiation using optical filters. We proposed a design and produced samples of two types of light filters: interference and absorption. The samples provide attenuation of the order of 103-106 for a wavelength of 1064 nm. Simultaneously we considered the possibility of protecting the video camera using various phase masks. This method does not require knowledge of the location of the laser spot and largely does not depend on the wavelength of the laser that is used. Also, this method does not limit the intensity of the incoming light beam and can potentially provide levels of attenuation of the harmful light signal of the order of 104-106. We modeled the propagation of a laser beam on a real atmospheric track. The obtained result demonstrates a significant influence of the fluctuation of the refractive index on the spatiotemporal properties of laser radiation. The investigated regularities can really act on the size of the laser beam which focused at long distances. We carried out real experiments on focusing a laser beam at distances of more than 1000 m. Our group developed a method for focusing laser radiation at large distances and created software that allows determining the size of the focused beam in real time, for this we used to analyze the diameter of the beam. Product Description popup.authors Bashchenko Sergij Mykolajovych Bezrodnyi Volodymyr Ivanovych Gnatovskyy Alexander V. Derzhypolska Liudmyla Anatoliivna Derzhypolskyi Andrii Gennadiiovych Matsnev Igor Viktorovych Nehriiko Anatolii Mykhailovych Perederiy Oleksandr Olegovych Potemkina Zhanna Vyacheslavivna Khodakovsyy Volodymyr Mykhaylovych Chumak Oleksandr Oleksandrovych Yaskovets Anatoliy Olegovych popup.nrat_date 2023-02-16 Close