The Possibility of Forming Two-Lobe Vortex Light Fields Using a Modified Liquid-Crystal Focusator

Котова, С. П.; Maiorova, A. M.; Samagin, S. A.

doi:10.1134/s0030400x19010089

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…34) Further, it is possible to make light fields with intensity distribution in the form of two maximum rotating during distribution. 35) The 4-channel devices mentioned above have a similar structure, and those electric field distributions are less affected by the change of the resistance of the HRL in the approximation of a small modal parameter, 32) so the optical properties should be stable with low driving voltage. In this paper, we discuss three driving methods, including amplitude method, phase method, and constant voltage method, for the LC lens with four applied voltages.…”

Section: Introductionmentioning

confidence: 99%

Driving methods for liquid crystal lens with rectangular aperture and four voltages

Zhang¹,

Li²,

Chen³

et al. 2021

Jpn. J. Appl. Phys.

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The driving methods for a liquid crystal lens with a rectangular aperture and four applied voltages are discussed. The properties of the liquid crystal lens can be controlled by amplitudes, phases, and frequencies of the voltages. Three driving methods, including the amplitude method, phase method, and constant voltage method, are used to tune the focal length. The advantage of these methods is that the effective voltage in the aperture center can be controlled to be greater than the liquid crystal threshold voltage without applying a bias voltage. It is found that the constant voltage method to tune the lens by the phases and the amplitudes of the four voltages in sync keeping a constant voltage in the aperture center leads to lower optical aberrations and shorter response time.

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Section: Introductionmentioning

confidence: 99%

Driving methods for liquid crystal lens with rectangular aperture and four voltages

Zhang¹,

Li²,

Chen³

et al. 2021

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

Shaping of Two-Lobe Light Fields by Means of Combined Two-Section Optical Elements

Прокопова

Котова

Samagin

2021

Bull. Russ. Acad. Sci. Phys.

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Measurement of phase modulation of LCOS SLM Santec SLM-200 and analysis of its applicability for optical reconstruction of images from diffractive elements

et al. 2021

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Phase liquid crystal (LC) spatial light modulators (SLM) are widely used for optical reconstruction of diffraction optical elements, including holograms. For this purpose high stability and linearity of phase response of SLM is required. In modern high resolution SLM digital signal addressing scheme which leads to emergence of effect of phase shift fluctuations during frame time is applied. In this paper measurements of character and peculiarities of modulation of phase shift of modern high-resolution LC SLM Santec SLM-200 were performed. Optical reconstruction of images from diffraction elements of different types was carried out, the quality of reconstruction and diffraction efficiency were assessed.

show abstract

The Possibility of Forming Two-Lobe Vortex Light Fields Using a Modified Liquid-Crystal Focusator

Cited by 3 publications

References 20 publications

Driving methods for liquid crystal lens with rectangular aperture and four voltages

Driving methods for liquid crystal lens with rectangular aperture and four voltages

Shaping of Two-Lobe Light Fields by Means of Combined Two-Section Optical Elements

Measurement of phase modulation of LCOS SLM Santec SLM-200 and analysis of its applicability for optical reconstruction of images from diffractive elements

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