We report on the remote control of the fine structure of a diffraction spot from optically induced dual gratings within a photosensitive polymer film. The material contains azobenzene in the polymer side chains and develops a surface relief under two-beam holographic irradiation. The diffraction of a polarized probe beam is sensitive to the orientation of the azobenzene groups forming a permanently stored birefringence grating within the film. We demonstrate that the fine structure of the probe diffraction spot switches from a Gaussian to a hollow or a hollow to a “Saturn”-like structure by a change in polarization. This makes it potentially useful in photonic devices because the beam shape can be easily inverted by an external stimulus.We report on the remote control of the fine structure of a diffraction spot from optically induced dual gratings within a photosensitive polymer film. The material contains azobenzene in the polymer side chains and develops a surface relief under two-beam holographic irradiation. The diffraction of a polarized probe beam is sensitive to the orientation of the azobenzene groups forming a permanently stored birefringence grating within the film. We demonstrate that the fine structure of the probe diffraction spot switches from a Gaussian to a hollow or a hollow to a “Saturn”-like structure by a change in polarization. This makes it potentially useful in photonic devices because the beam shape can be easily inverted by an external stimulus.

中文翻译：

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来自光致光栅的衍射斑的偏振控制精细结构

我们报告了对来自光敏聚合物膜内的光诱导双光栅的衍射斑的精细结构的远程控制。该材料在聚合物侧链中含有偶氮苯，并在两束全息照射下形成表面浮雕。偏振探测光束的衍射对偶氮苯基团的方向敏感，在薄膜内形成永久存储的双折射光栅。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。我们报告了对来自光敏聚合物膜内的光诱导双光栅的衍射斑的精细结构的远程控制。该材料在聚合物侧链中含有偶氮苯，并在两束全息照射下形成表面浮雕。偏振探测光束的衍射对偶氮苯基团的方向敏感，在薄膜内形成永久存储的双折射光栅。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。该材料在聚合物侧链中含有偶氮苯，并在两束全息照射下形成表面浮雕。偏振探测光束的衍射对偶氮苯基团的方向敏感，在薄膜内形成永久存储的双折射光栅。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。该材料在聚合物侧链中含有偶氮苯，并在两束全息照射下形成表面浮雕。偏振探测光束的衍射对偶氮苯基团的方向敏感，在薄膜内形成永久存储的双折射光栅。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。我们证明了探针衍射点的精细结构通过偏振变化从高斯转换为空心或空心到“土星”状结构。这使其在光子器件中具有潜在的用途，因为光束形状可以很容易地被外部刺激反转。