The present article is dedicated to the problem of computer-generated holograms application for measurement of optical wavefront curvature with high precision. A holographic wavefront sensor scheme based on a phase-only spatial light modulator, which is used for CGH displaying, is proposed. The presented optical scheme and processing algorithm are validated with numerical simulations and experimental modelling.

Measurement of wavefront curvature using computer-generated holograms.

The use of computer generated holograms for the testing of aspheric wavefronts is described. An analysis of the errors produced by emulsion movement, incorrect hologram size and position, and distortion in hologram plotter and photoreduction lens is given, and it is shown that all the errors are proportional to the slope of the aspheric wavefront. Experimental results verifying the error analysis are shown for testing rotationally nonsymmetric wavefronts having slopes as large as 125 waves per radius and departures as large as sixty-five waves.

Using computer generated holograms to test aspheric wavefronts

An algorithm that automatically calculates aberrations in the holographic wavefront sensor scheme previously proposed by the authors is described, which enables measuring aberrations by means of iterative generation of holograms on a phase spatial light modulator (SLM). The practical implementation of this algorithm on the basis of the feedback of the camera and SLM is given. Using the proposed algorithm, defocusing was measured with an accuracy of λ/160.

Hardware/Software Support for Correlation Detection in Holographic Wavefront Sensors

The windshield projection of information (head-up display, HUD) is shown to be suitable for use in aviation. The design of projection systems is considered. Promising systems are described and the optimal system for aerospace applications is selected.

Head-Up Display Systems in Aviation

The possibility of using computer-generated Fresnel holograms to determine phase aberrations of a wavefront is studied. The results of computer simulation of the propagation of an elementary signal based on the Fresnel integral transform are presented. The principle of operation of a hologram for a wavefront sensor is discussed.

Investigation of Computer-Generated Fresnel Holograms for Wavefront Sensors

A wavefront sensor (WFS) based on holographic optical elements, namely computer generated Fourier holograms is proposed as a perspective alternative to the Shack-Hartmann sensor. A possibility of single and multimode sensor and the dependence of their characteristics were investigated.

http://iopscience.iop.org/article/10.1088/1742-6596/737/1/012064/pdf

Wave front sensor based on holographic optical elements

Many areas of optical science and technology require fast and accurate measurement of the radiation wavefront shape. Today there are known a lot of wavefront sensor (WFS) techniques, and their number is growing up. The last years have brought a growing interest in several schematics of WFS, employing the holography principles and holographic optical elements (HOE). Some of these devices are just the improved versions of the standard and most popular Shack-Hartman WFS, while other are based on the intrinsic features of HOE.

Fourier holography in holographic optical sensors

Recent progress in holographic wavefront sensing

Optical science and technologies require fast and precise measurements of wavefront curvature Amount of wavefront measurement methods increased in the last few years The important part of the modern wavefront sensors are holographic optical elements (HOE) This article shows a possibility of using HOE for generating Zernike aberration modes

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Polina Malinina

Papers

Wave front sensor based on holographic optical elements

Investigation of Computer-Generated Fresnel Holograms for Wavefront Sensors

Fourier holography in holographic optical sensors

Recent progress in holographic wavefront sensing

Advanced holographic wavefront sensor