Formation of thin dynamic holographic gratings with diffraction efficiency close to 100% in an optical system with feedback

Berenberg, Vladimir A.; Venediktov, Vladimir Yu.

doi:10.1364/jot.68.000665

Cited by 5 publications

(3 citation statements)

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“…Interferometric addressing has resulted in diffraction efficiencies up to 30% with analog phase modulation in nematic LC media, 16 and up to 34% with polarization modulation in deformed-helix LC meda. 15,17 More recently, diffraction efficiencies approaching 100% have been realized with modulo-2π phase modulation induced by intrinsic anisotropy, 18,19 optical feedback, 20 and addressing with an amplitude modulators interfaced to a computer. 6,8,9 The addressing architecture used in this work is shown in Figure 4.…”

Section: Description Of Phase Modulatormentioning

confidence: 99%

Programmable diffractive optics for high-fidelity wavefront control

et al. 2002

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High-fidelity wavefront control is demonstrated via programmable modulo-2π two-dimensional phase profiles displayed on a high-resolution computer-addressable phase modulator system. This prototype setup operates with 307,200 independently addressable elements and a fill-factor and interpixel influence function that are controlled via spatial filtering in a Fourier plane. Nonlinearities in the phase response are compensated computationally. Aberration compensation with better than 1/4-wave peak-to-peak fidelity is demonstrated."

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Section: Description Of Phase Modulatormentioning

confidence: 99%

Programmable diffractive optics for high-fidelity wavefront control

et al. 2002

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“…It would be expected that the diffraction efficiency is asymmetric relative to the angle of incidence. [7][8][9][10] In this paper, we propose a new efficient approach to record the thin dynamic phase grating (refractive index grating) with an asymmetric fringe profile in the LC cell. The firstorder DE exceeds the theoretical limit for symmetric profile gratings.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric dynamic phase holographic grating in nematic liquid crystal

et al. 2016

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A new scheme for recording a dynamic phase grating with an asymmetric profile in C 60 -doped homeotropically aligned nematic liquid crystal (NLC) was presented. An oblique incidence beam was used to record the thin asymmetric dynamic phase holographic grating. The diffraction efficiency we achieved is more than 40%, exceeding the theoretical limit for symmetric profile gratings. Both facts can be explained by assuming that a grating with an asymmetric saw-tooth profile is formed in the NLC. Finally, physical mechanism and mathematical model for characterizing the asymmetric phase holographic grating were presented, based on the photo-refractive-like (PR-like) effect.

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“…This is a drawback of the direct method for holographic corrector recording, which was used in [4][5][6][7]. This drawback can be overcome by sophisticating the corrector recording schemes [8,9], as a result of which dynamic holographic gratings with an asymmetric fringe profile can be recorded. It is known that a grating with a saw-tooth fringe profile and an amplitude of 2 π has a diffraction efficiency as high as 100%.…”

Section: Introduction Thin Dynamic Holograms With An Asymmetric Frinmentioning

confidence: 99%

10.1007/s11449-008-2024-7

2010

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Formation of thin dynamic holographic gratings with diffraction efficiency close to 100% in an optical system with feedback

Cited by 5 publications

References 0 publications

Programmable diffractive optics for high-fidelity wavefront control

Programmable diffractive optics for high-fidelity wavefront control

Asymmetric dynamic phase holographic grating in nematic liquid crystal

10.1007/s11449-008-2024-7

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