UDC 535.8
CSCSTI 29.31
Russian Classification of Professions by Education 03.03.02
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 613
BISAC SCI053000 Physics / Optics & Light
Recently, individual publications have appeared that disseminate ideas for the use of fast phase measurement and control systems for atmospheric applications. I would like to point out the ambiguity of the success of these aspirations. This is primarily due to the limitation of photon flux and measurement accuracy of the wavefront sensor in a number of applications. In the short time between adjacent frames, the useful signal does not change, i.e. the sensor detects zero signal change, and therefore no new voltage is applied to the flexible mirror. As the operating frequency of the system increases, the influence of amplitude fluctuations increases, especially when the level of turbulence increases, when the field coherence radius decreases, and, consequently, the size of the subaperture decreases. No matter how fast the corrective flexible mirrors are, it is necessary to give them time to work. By increasing the speed of the measuring system, we increase the residual level of uncompensated distortion. When operating at high frequencies, due to the influence of the internal turbulence scale, incorrect estimation of phase fluctuations and all Zernike polynomials occurs. This occurs even in the region of “weak” intensity fluctuations.
adaptive optics, atmospheric turbulence, wavefront
1. Wizinowich P. Progress in laser guide star adaptive optics and lessons learned // Proc. SPIE 2012. 8447. 84470D.
2. Lukin V.P., Fortes B.V. Phase correction of turbulent distortions of laser beams and images under the «strong» intensity fluctuations //Proc. SPIE. 1998. 3219.
3. Gurvich A.S., Kon A.I., Mironov V.L., Hmelevcov S.S. Lazernoe izluchenie v turbulentnoy atmosfere. M.: Nauka. 1976. 277 c.
4. Lukin V.P. Dynamics of adaptive optical systems //J. Opt. Soc. Am. A. 2010. 27. №11. A216-A222.
5. Lukin V.P. and Sazonova P.V. Dynamic properties of adaptive optical systems // Russian Physics Journal. 2016. 59. No.7. p.1052-1061.
6. Lukin V.P. Trebovaniya k dinamicheskim harakteristikam sistem adaptivnoy optiki // Kvantovaya Elektronika. 2022. 52. №7. 652-660.
7. Lukin V.P. Features of adaptive phase correction of optical wave distortions under conditions of intensity fluctuations // MDPI. Photonics. 2024. 11(5). 460.
8. Kazakov D.V., Lukin V.P. Issledovanie vliyaniya amplitudnyh fluktuaciy na fazovye izmereniya // Sbornik trudov konferencii «Aktual'nye problemy radiofiziki»: X Mezhdunarodnaya nauchno-prakticheskaya konferenciya, g. Tomsk. 26-29 sentyabrya 2023 g. Tomsk: Izdatel'skiy dom TGU. 2023. A 43. 229-233.
