Size Dependence of Rotation Frequency of Individual Laser Trapped Liquid Crystal Droplets

Saulius Juodkazis; Masaya Shikata; Toshimasa Takahashi; Shigeki Matsuo; Hiroaki Misawa

Size Dependence of Rotation Frequency of Individual Laser Trapped Liquid Crystal Droplets

Saulius Juodkazis, Masaya Shikata, Toshimasa Takahashi, Shigeki Matsuo, Hiroaki Misawa

研究成果: Article › 査読

抄録

We report the development of an all-optical liquid-crystal (LC) switch realized by laser manipulation of a three-dimensionally trapped micrometer-size nematic liquid-crystal droplet. Transmission of a polarizer/LC droplet/analyzer system can be modulated at a frequency as high as 10³ Hz for micrometer sized LC droplets. An optical switching corresponds to the rotation of the LC droplet by an angle of π/4. The dependence of rotation frequency on LC droplet size is explained in terms of the circularly polarized light scattering by the molecules of the LC droplet. This scattering is responsible for the transfer of angular momentum from the light to the LC droplet.

本文言語	English
ページ（範囲）	518-520
ページ数	3
ジャーナル	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
巻	38
号	5 PART 2
出版ステータス	Published - 1999 5 1
外部発表	はい

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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引用スタイル

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abstract = "We report the development of an all-optical liquid-crystal (LC) switch realized by laser manipulation of a three-dimensionally trapped micrometer-size nematic liquid-crystal droplet. Transmission of a polarizer/LC droplet/analyzer system can be modulated at a frequency as high as 103 Hz for micrometer sized LC droplets. An optical switching corresponds to the rotation of the LC droplet by an angle of π/4. The dependence of rotation frequency on LC droplet size is explained in terms of the circularly polarized light scattering by the molecules of the LC droplet. This scattering is responsible for the transfer of angular momentum from the light to the LC droplet.",

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AU - Juodkazis, Saulius

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AU - Takahashi, Toshimasa

AU - Matsuo, Shigeki

AU - Misawa, Hiroaki

PY - 1999/5/1

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N2 - We report the development of an all-optical liquid-crystal (LC) switch realized by laser manipulation of a three-dimensionally trapped micrometer-size nematic liquid-crystal droplet. Transmission of a polarizer/LC droplet/analyzer system can be modulated at a frequency as high as 103 Hz for micrometer sized LC droplets. An optical switching corresponds to the rotation of the LC droplet by an angle of π/4. The dependence of rotation frequency on LC droplet size is explained in terms of the circularly polarized light scattering by the molecules of the LC droplet. This scattering is responsible for the transfer of angular momentum from the light to the LC droplet.

AB - We report the development of an all-optical liquid-crystal (LC) switch realized by laser manipulation of a three-dimensionally trapped micrometer-size nematic liquid-crystal droplet. Transmission of a polarizer/LC droplet/analyzer system can be modulated at a frequency as high as 103 Hz for micrometer sized LC droplets. An optical switching corresponds to the rotation of the LC droplet by an angle of π/4. The dependence of rotation frequency on LC droplet size is explained in terms of the circularly polarized light scattering by the molecules of the LC droplet. This scattering is responsible for the transfer of angular momentum from the light to the LC droplet.

KW - Laser trapping

KW - Light scattering

KW - Liquid crystal

KW - Micromachining

KW - Optical switching

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