Numerical simulation of dynamical adaptive phase correction of turbulent radiation distortions and estimation of their temporal characteristics with the help of Shack-Hartmann wavefront sensor

Volkov, M.V.; Bogachev, V. A.; Starikov, F. A.; Shnyagin, R.A.

doi:10.15372/aoo20210710

Cited by 3 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When creating, adjusting, and testing adaptive optical systems used in astronomy and vision systems in a turbulent atmosphere [2][3][4][5][6][7][8], the problem of estimating the effect of noise on measurements obtained on the stand of a tracking adaptive optical system becomes relevant [9,10].…”

Section: Introductionmentioning

confidence: 99%

Efficiency of stabilization of laser radiation on the stand of an adaptive optical system

Antoshkin,

Lavrinov,

Lavrinova

et al. 2023

XVI International Conference on Pulsed Lasers and Laser Applications

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Efficiency of stabilization of laser radiation on the stand of an adaptive optical system

Antoshkin,

Lavrinov,

Lavrinova

et al. 2023

XVI International Conference on Pulsed Lasers and Laser Applications

View full text Add to dashboard Cite

“…Numerical studies on the efficiency of phase correction of turbulent distortions of a laser beam depending on the speed of adaptive systems [11], with using of corrector to compensate for rapidly changing small-scale aberrations of laser beams [12] or of monomorphic mirror simulation [13] should also be carried out taking into account the repeatability of atmospheric parameters.…”

Section: Introductionmentioning

confidence: 99%

“…The beam formed by the system passes over the electric heating element (11), which forms its turbulent distortions, and enters the beam-splitting cube (19), where it branches and one branch enters the stand output through the scaling optics (20), from where it is directed to the input of the tuned (tested) optical systems. The other branch of the received beam passes through a light filter (33), a lens (34) and forms an image on the video camera of the stand (35).…”

Section: Introductionmentioning

confidence: 99%

“…The signal from the video control camera enters the computer (12) and is used to set up and control the operation of the stand elements, to measure the turbulent characteristics of the beams. Also, the computer through the electric heating elements control unit (13) ensures the formation of thermal air flows over the electric heating elements (6,11,21,27) and their intensity to create the required turbulence in the optical beams. The computer through the control units (14,15,16) programmatically sets the tilts of the deflector mirrors (9,8,17), forming the tilt angles of the wave front of the corresponding beams.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Emulation of atmospheric turbulence for image stabilization of laser radiation on the stand of adaptive optical system

Antoshkin

Borzilov²,

Lavrinov³

et al. 2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

View full text Add to dashboard Cite

A description of the stand for an adaptive optics system operating in the mode of emulation of the slopes of the laser radiation wavefront on a turbulent path is given. The potential capabilities of the test bench involve setting the parameters of turbulent distortions characteristic of paths of various lengths, as well as using a piezceramic deflector of wavefront slopes as a source of emulated image distortions in the observation plane. The stand of the adaptive optics system makes it possible to stabilize the jitter of the optical radiation image in the plane of the receiving device with the adaptive correction circuit turned on and off under conditions of various system operation modes.

show abstract

Investigation of spatial and temporal characteristics of turbulent-distorted laser radiation during its dynamic phase correction in an adaptive optical system

Belousov¹,

Bogachev²,

Volkov³

et al. 2021

Quantum Electron.

View full text Add to dashboard Cite

We report the results of the analysis of experiments on dynamic phase correction of laser radiation distorted by a turbulent airflow in an adaptive optical system (AOS) with a Shack–Hartmann wavefront sensor (WFS). A field-programmable gate array is used as the main AOS control element, which provides a closed loop AOS bandwidth of up to 2000 Hz. The WFS is used to estimate the characteristic bandwidth of the generated turbulence ν turb. Changes in the spatial and temporal spectra of the laser radiation phase, as well as the quality of the beam during its dynamic phase correction at various AOS frequencies, are analysed. It is shown experimentally and by calculation that to ensure a high efficiency of the wavefront correction, the AOS frequency should be at least 20 times higher than ν turb.

show abstract

Numerical simulation of dynamical adaptive phase correction of turbulent radiation distortions and estimation of their temporal characteristics with the help of Shack-Hartmann wavefront sensor

Cited by 3 publications

References 0 publications

Efficiency of stabilization of laser radiation on the stand of an adaptive optical system

Efficiency of stabilization of laser radiation on the stand of an adaptive optical system

Emulation of atmospheric turbulence for image stabilization of laser radiation on the stand of adaptive optical system

Investigation of spatial and temporal characteristics of turbulent-distorted laser radiation during its dynamic phase correction in an adaptive optical system

Contact Info

Product

Resources

About