Abstract
One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance. They constitute a significant portion of the cost of the final optical devices. In this study, we consider the possibility of replacing an adaptive mirror with the adaptive amplitude Fresnel zone plate, implemented using a digital light-processing matrix. Since such matrices are widely used in mass industry products (light projectors), their costs in large batches are 1–2 orders of magnitude lower than the cost of inexpensive deformable mirrors. Numerical modeling for scanning an optical coherence tomography system with adaptive optics is presented. It is shown that wavefront distortions with high spatial frequencies and large amplitudes can be corrected using an amplitude Fresnel zone plate. The results are compared with piezoelectric and microelectromechanical system mirrors.
Highlights
The main area of application of optical coherence tomography (OCT) systems has been the study of the human eye fundus
One of the main factors limiting the lateral resolution of OCT systems is eye optical aberrations
Compensation for aberrations is of particular importance in scanning OCT systems, which, at the moment, have the greatest applicability in practice [9]
Summary
The main area of application of optical coherence tomography (OCT) systems has been the study of the human eye fundus. One of the main factors limiting the lateral resolution of OCT systems is eye optical aberrations. Compensation for aberrations is of particular importance in scanning OCT systems, which, at the moment, have the greatest applicability in practice [9]. For scanning OCT systems, the use of traditional adaptive optics (at least the use of wavefront correctors) turns out to be desirable and, possibly, the best option for obtaining high resolution and for the signal-to-noise ratio [11]. This the enabled cusing of bothof the probed and theand received radiation, and aberrations with large ampliboth the probed the received radiation, and aberrations with large amplitudes and tudes and withwith highhigh spatial frequencies could be compensated.
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