基于光敏染料分子光致取向机制的全息光栅制作实验

HOLOGRAPHIC GRATING FABRICATION EXPERIMENT BASED ON PHOTOINDUCED ORIENTATION MECHANISM OF PHOTOSENSITIVE DYE MOLECULES

相对于传统的全息光栅制作实验,我们结合课题研究内容拓展了一种新的全息光栅制作实验内容。传统的全息光栅制作利用了全息干版中的光敏材料的不可逆的光化学反应,在本文中我们利用一种光敏染料分子的光致异构取向机制来记录干涉光强的分布。我们通过这种光敏染料分子的光致异构取向机制在样品中产生瞬态全息光栅。相比于传统的全息光栅制作实验,我们提出的这种全息光栅制作方式,具有样品可重复利用、制作过程绿色环保、光栅常数可在原光路实时测量等优点,对传统实验教学是一种有益的补充。

Compared with the traditional experiment of making holographic grating, we expand a new experiment of making holographic grating. The traditional holographic gratings make use of the irreversible photochemical reaction of the photosensitive materials in the holographic plate. In this paper, we use a photoisomerization mechanism of photosensitive dye molecules to record the distribution of interference light intensity. Using the photoisomerization mechanism of the photosensitive dye molecules, we generate a transient holographic grating in the sample. Compared with the traditional experiment of making hologram grating, the method proposed by us has the advantages of reusable sample, green production process, real-time measurement of grating constant in the original optical path, and etc. It is a beneficial supplement to the traditional experiment teaching.