Waveguide array generated by discrete spatial soliton in Ce: SBN75 photorefractive crystal

WANG Ying; ZHANG Xiao-fei; LIANG Bao-lai; GUO Qing-lin; WANG Shu-fang

doi:10.3788/OPE.20162413.0141

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Waveguide array generated by discrete spatial soliton in Ce: SBN75 photorefractive crystal

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- Waveguide array generated by discrete spatial soliton in Ce: SBN75 photorefractive crystal
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 141-147(2016)
- 作者机构：
  
  河北大学物理科学与技术学院,河北保定,071002
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0141
  CLC： O799;O438
- Received：28 May 2016，
  
  Revised：17 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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王颖, 张晓非, 梁宝来等. Ce:SBN75光折变晶体中的离散空间光孤子波导阵列[J]. 光学精密工程, 2016,24(10s): 141-147

WANG Ying, ZHANG Xiao-fei, LIANG Bao-lai etc. Waveguide array generated by discrete spatial soliton in Ce: SBN75 photorefractive crystal[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 141-147
王颖, 张晓非, 梁宝来等. Ce:SBN75光折变晶体中的离散空间光孤子波导阵列[J]. 光学精密工程, 2016,24(10s): 141-147 DOI： 10.3788/OPE.20162413.0141.

WANG Ying, ZHANG Xiao-fei, LIANG Bao-lai etc. Waveguide array generated by discrete spatial soliton in Ce: SBN75 photorefractive crystal[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 141-147 DOI： 10.3788/OPE.20162413.0141.

摘要

探讨了空间光孤子波导进行弱光束操纵强光束的可行性，研究了空间光孤子诱导波导的各向异性及其对离散孤子波导之间相互作用的影响。通过控制亚微瓦量级532 nm激光的入射光强和外加电压条件，在Ce：SBN75光折变晶体中平衡光折变自聚焦效应和激光束传输的扩散效应形成了稳定的（2+1）维空间屏蔽光孤子，并由此空间光孤子在该晶体中诱导出孤子波导，然后在水平和垂直方向上移动晶体位置获得离散空间光孤子波导阵列。利用晶体折射率弱敏感的633 nm宽光束激光与空间光孤子同轴传输并覆盖空间光孤子诱导出的光波导和离散空间光孤子二维波导阵列。结果表明，在532 nm激光的入射光强为0.058

W，施加电压为200 V时空间光孤子可在10 s内形成，其诱导产生的光波导轮廓清晰；感应波导具有各向异性，各向异性会影响离散孤子波导之间的相互作用。该结果对利用空间光孤子波导实现二维信息的处理和传输具有重要意义。

Abstract

In order to verify the the feasibility of controlling intense light beam by weak light beam through the spatial soliton waveguide array

the anisotropy of soliton-induced waveguide and its effect on the interaction of discrete soliton waveguide were investigated. By controlling the incident light intensity of the 532 nm laser and the applied voltage

the photorefractive self-focusing effect and diffusion effect of the laser beam in the Ce:SBN75 photorefractive crystal were balanced to form the stable (2+1) dimensional spatial screening soliton

which could induce soliton waveguides. Then a waveguide array for discrete spatial solitons was generated by adjusting the crystal position vertically and horizontally. The optical waveguide and the two-dimensional spatial soliton waveguide array were detected through the coaxial transmittance of spatial solitons and the a 633 nm expanded-beam laser with weak sensitivity to crystal refraction index. It indicates that the spatial soliton is generated in 10 s and the induced optical waveguides have clear profile for the incident light intensity of 0.058

m and the applied voltage of 200 V. The soliton-induced waveguides have anisotropy

which enables a certain impact on the interaction between discrete soliton waveguides. This result is of great significance to achieving processing and transmission of two-dimensional information by using the spatial solution waveguides.

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references

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