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

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	518-520
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	38
Issue number	5 PART 2
Publication status	Published - 1999 May 1
Externally published	Yes

Keywords

Laser trapping
Light scattering
Liquid crystal
Micromachining
Optical switching

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Cite this

Size Dependence of Rotation Frequency of Individual Laser Trapped Liquid Crystal Droplets. / Juodkazis, Saulius; Shikata, Masaya; Takahashi, Toshimasa; Matsuo, Shigeki; Misawa, Hiroaki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 38, No. 5 PART 2, 01.05.1999, p. 518-520.

Research output: Contribution to journal › Article › peer-review

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AU - Misawa, Hiroaki

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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.

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

Abstract

Keywords

ASJC Scopus subject areas

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