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The spatial distribution of optical field in random media with different filling densities of the same material particles

Liu Zheng-Dong Wang Hui-Qin Wang Bing

The spatial distribution of optical field in random media with different filling densities of the same material particles

Liu Zheng-Dong, Wang Hui-Qin, Wang Bing
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Publishing process
  • Received Date:  06 May 2007
  • Accepted Date:  05 September 2007
  • Published Online:  05 February 2008

The spatial distribution of optical field in random media with different filling densities of the same material particles

  • 1. (1)南昌大学材料科学与工程学院,南昌 330031;南昌大学近代物理研究所,南昌 330031;南昌大学纳米技术工程研究中心,南昌 330047; (2)南昌大学材料科学与工程学院,南昌 330031;南昌大学物理实验中心,南昌 330031; (3)南昌大学近代物理研究所,南昌 330031

Abstract: The problem of light localization in two-dimensional random media with different filling densities of the same material particles is studied by use of the finite difference time domain method. Based on the experimental parameters of random media, the spatial distributions of optical field in the media with different filling densities of scattering particles are simulated. Results show that when the scattering mean free path is close to the wavelength, the optical fields are localized obviously in the random media. And with the particle filling density increasing, the localization becomes stronger. So with the same pump beam, it is easier to achieve laser radiation for random media with higher filling densities of scattering particles. The results agree with the experiments qualitatively.

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