Study of the mode-control of random lasers by photo-reaction

光反应随机激光模式控制研究

• 批准号: 16540296
• 负责人: KURITA Atusi
• 金额: $ 2.24万
• 依托单位: KWANSEI GAKUIN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540296/
• 关键词: multiple scattering; laser; random media; photo-reaction; FDTD; 多重散乱; 可飽和色素

An optical memory effect by interference of multiple scattered light in a random media was combined with a random laser with the aim of controlling the wavelength, the wave-front, and the polarization state of the output of the random laser. By detecting the optical memory effect through the scattered light, it was confirmed that the loss of light in the sample was decreased for the light of the same condition as the writing light. If the laser oscillation occurs in such a medium, the oscillation condition will be controlled by the writing. For the purpose, an photo-reactive material that is not influenced by the strong laser light is needed. However, we have not obtain materials which show reproducible optical memory effect. Then, a random laser was mixed with saturable dye which is regarded as an transient photo-reactive material, and its effect was confirmed. A computer simulation by the FDTD method was carried out, and the hole shape (intensity correlation function) was calculated. As for the width of the hall, it agreed well with the value expected from the theory and the experiment, and it was confirmed that this calculation gives the result corresponding to the optical memory effect and effective to the calculation of the electromagnetic field in a random medium.

将随机介质中多次散射光干涉产生的光存储效应与随机激光器相结合，目的是控制随机激光器输出的波长、波前和偏振态。通过由散射光检测光学记忆效应，确认了对于与写入光相同条件的光，样品中的光损失减少。如果在这样的介质中发生激光振荡，则振荡条件将由写入控制。为此，需要不受强激光影响的光反应材料。然而，我们还没有获得显示出可再现的光存储效应的材料。然后，将随机激光与可饱和染料混合作为瞬态光反应材料，并证实了其效果。用FDTD方法进行了计算机模拟，并计算了孔的形状（强度相关函数）。计算结果与理论值和实验值吻合较好，证实了该方法的计算结果符合光记忆效应，对随机介质中电磁场的计算是有效的。

项目成果

多重散乱光の干渉による光記録効果

多重散射光干涉产生的光记录效应

• 发表时间: 2005
• 期刊: 光学 34
• 作者: S.Saito;S.G.Louie;M.L.Cohen;S.Saito 他;S.Saito 他;斎藤 晋;T.Matsumoto 他;Y.Akai 他;栗田 厚
• 通讯作者: 栗田 厚

Optical memory effect by interference of multiple-scattered light

多次散射光干涉产生的光记忆效应

• 发表时间: 2005
• 期刊: Kogaku (Japanese) 34
• 作者: S.Saito;S.G.Louie;M.L.Cohen;S.Saito 他;S.Saito 他;斎藤 晋;T.Matsumoto 他;Y.Akai 他;栗田 厚;Atusi Kurita
• 通讯作者: Atusi Kurita