Holographic wavefront sensors are the convenient tool for the fast, cheap and computation lacking wavefront analysis. The use of holographic filters-correlators makes it possible to decompose the wavefront along the basis of Zernike polynomials or to represent it as a set of piston segments. The paper considers possible application of such a technique for beam decomposition along other basis like Hermite-Gauss, Laguerre-Gauss and so on sets.
First experimental demonstration of the device, providing measurement of Zernike polynomial in the incoming wavefront by the use of the Fourier-hologram, recorded with the use of diffuse scattered beam. Signal to noise ratio of such approach was investigated. It is shown that one can easily realize such a device, providing simultaneous and noise-lacking measurement of several dozen Zernike modes.
First experimental demonstration of the device, providing measurement of Zernike polynomial in the incoming wavefront by the use of the Fourier-hologram, recorded with the use of diffuse scattered beam. Signal to noise ratio of such approach was investigated. It is shown that one can easily realize such a device, providing simultaneous and noiselacking measurement of several dozen Zernike modes.
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. A holographic mode wavefront sensor is proposed, which makes it possible to measure up to several tens of wavefront modes. The increase in the number of measured modes is implemented using the conversion of a light wave entering the sensor into a wide diffuse light beam, which allows one to record a large number of holograms, each intended for measuring one of the modes
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. A holographic mode wavefront sensor is proposed, which
makes it possible to measure up to several tens of wavefront modes. The increase in the number of measured modes is
implemented using the conversion of a light wave entering the sensor into a wide diffuse light beam, which allows one to
record a large number of holograms, each intended for measuring one of the modes.
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