УДК: 535.42, 681.2

Ability of a four-channel liquid-crystal modulator to generate light fields with a complex intensity distribution

Kotova, S.P., Mayorova, A.M., Samagin, S.A.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Котова С.П., Майорова А.М., Самагин С.А. Возможности четырехканального жидкокристаллического модулятора по формированию световых полей со сложным распределением интенсивности // Оптический журнал. 2017. Т. 84. № 5. С. 46–55.

Kotova S.P., Mayorova A.M., Samagin S.A. Ability of a four-channel liquid-crystal modulator to generate light fields with a complex intensity distribution [in Russian] // Opticheskii Zhurnal. 2017. V. 84. № 5. P. 46–55.

For citation (Journal of Optical Technology):

S. P. Kotova, A. M. Mayorova, and S. A. Samagin, "Ability of a four-channel liquid-crystal modulator to generate light fields with a complex intensity distribution," Journal of Optical Technology. 84(5), 323-330 (2017). https://doi.org/10.1364/JOT.84.000323

Abstract:

Numerical modeling methods are used to show that the ability of a four-channel liquid-crystal modulator to form light fields with a complex intensity distribution is not restricted to contour light fields in the form of rings, ellipses, and their arcs. Light fields can be formed with an intensity distribution in a transverse plane in the form of the boundaries of squares, rhombuses, parallelograms, and octagons. The light field can be focused at definite distances from a liquid-crystal focuser into points at the corners of the corresponding quadrilateral and at its center. It is shown that the field structure can be controlled by varying the amplitudes and phases of the potentials, as well as the voltage frequencies. Possibilities of using the resulting fields in optical-manipulation tasks are discussed.

Keywords:

liquid-crystal modulator, light fields with complex spacial structure, dynamic control

Acknowledgements:

The research was supported by the Russian Foundation for Basic Research (RFBR) (16-29-14012, 16-42-630773 r_a).

OCIS codes: 230.3720, 070.6120, 140.3300

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