Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal

Xiangjie, Zhao; Cangli, Liu; Jiazhu, Duan; Dayong, Zhang; Yongquan, Luo

doi:10.1063/1.4905421

Title: Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal

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Abstract

Optically addressed conventional nematic liquid crystal spatial light modulator has attracted wide research interests. But the slow response speed limited its further application. In this paper, polymer network liquid crystal (PNLC) was proposed to replace the conventional nematic liquid crystal to enhance the response time to the order of submillisecond. The maximum light scattering of the employed PNLC was suppressed to be less than 2% at 1.064 μm by optimizing polymerization conditions and selecting large viscosity liquid crystal as solvent. The occurrence of phase ripple phenomenon due to electron diffusion and drift in photoconductor was found to deteriorate the phase modulation effect of the optical addressed PNLC phase modulator. The wavelength effect and AC voltage frequency effect on the on state dynamic response of phase change was investigated by experimental methods. These effects were interpreted by electron diffusion and drift theory based on the assumption that free electron was inhomogeneously distributed in accordance with the writing beam intensity distribution along the incident direction. The experimental results indicated that the phase ripple could be suppressed by optimizing the wavelength of the writing beam and the driving AC voltage frequency when varying the writing beam intensity to generate phase change in 2π range.more »« less

Authors:

Xiangjie, Zhao; Cangli, Liu; Jiazhu, Duan; Dayong, Zhang; Yongquan, Luo ^[1]

Institute of Fluid Physics, China Academy of Engineering Physics, 621900 Mianyang (China)

Publication Date:: Wed Jan 07 00:00:00 EST 2015

OSTI Identifier:: 22399223

Resource Type:: Journal Article

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 117; Journal Issue: 1; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIFFUSION; DISTRIBUTION; ELECTRIC POTENTIAL; ELECTRONS; LIGHT SCATTERING; LIQUID CRYSTALS; MODULATION; OPTIMIZATION; POLYMERIZATION; POLYMERS; TRANSFER FUNCTIONS; VISIBLE RADIATION

Citation Formats


                    Xiangjie, Zhao, Cangli, Liu, Jiazhu, Duan, Dayong, Zhang, and Yongquan, Luo. Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4905421.

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                    Xiangjie, Zhao, Cangli, Liu, Jiazhu, Duan, Dayong, Zhang, & Yongquan, Luo. Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal.  United States.  https://doi.org/10.1063/1.4905421

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                    Xiangjie, Zhao, Cangli, Liu, Jiazhu, Duan, Dayong, Zhang, and Yongquan, Luo. 2015.  
        "Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal".  United States.  https://doi.org/10.1063/1.4905421.

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@article{osti_22399223,

  title        = {Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal},

  author       = {Xiangjie, Zhao and Cangli, Liu and Jiazhu, Duan and Dayong, Zhang and Yongquan, Luo},

  abstractNote = {Optically addressed conventional nematic liquid crystal spatial light modulator has attracted wide research interests. But the slow response speed limited its further application. In this paper, polymer network liquid crystal (PNLC) was proposed to replace the conventional nematic liquid crystal to enhance the response time to the order of submillisecond. The maximum light scattering of the employed PNLC was suppressed to be less than 2% at 1.064 μm by optimizing polymerization conditions and selecting large viscosity liquid crystal as solvent. The occurrence of phase ripple phenomenon due to electron diffusion and drift in photoconductor was found to deteriorate the phase modulation effect of the optical addressed PNLC phase modulator. The wavelength effect and AC voltage frequency effect on the on state dynamic response of phase change was investigated by experimental methods. These effects were interpreted by electron diffusion and drift theory based on the assumption that free electron was inhomogeneously distributed in accordance with the writing beam intensity distribution along the incident direction. The experimental results indicated that the phase ripple could be suppressed by optimizing the wavelength of the writing beam and the driving AC voltage frequency when varying the writing beam intensity to generate phase change in 2π range. The modulation transfer function was also measured.},

  doi          = {10.1063/1.4905421},

  url          = {https://www.osti.gov/biblio/22399223},
  journal      = {Journal of Applied Physics},

  issn         = {0021-8979},

  number       = 1,

  volume       = 117,

  place        = {United States},

  year         = {Wed Jan 07 00:00:00 EST 2015},

  month        = {Wed Jan 07 00:00:00 EST 2015}

}

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