Assessment of transformations of nanoporous volume holograms

1st International Scientific School on Methods of Digital Image Processing in Optics and Photonics

物理学;计算机科学

Chigrin, R.^1 ; Andreeva, N.^1 ; Andreeva, O.^1

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, 49 Kronverkskiy pr., St.Petersburg

197101, Russia^1

关键词: Ambient humidity;    Diffraction angle;    Digital methods;    Nano-porous;    Pore volume;    Variation on parameters;    Volume holograms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/536/1/012004/pdf
DOI  :  10.1088/1742-6596/536/1/012004

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The work presents the experimental results on assessment of the impact of the ambient humidity variation on parameters of silver-containing volume holograms in nanoporous silicate matrices 1 mm thick. The experiments were conducted on a dedicated holographic stand with the use of digital methods of data recording and processing. The diffraction angle of 633 nm radiation was found to change by 0.8 mrad at humidity variation in the interval (40-90%) which is suggested to be related to a change of the average refractive index of a hologram by as much as 6 · 10-3and be due to the absorption of water vapors by the light-sensitive composition, distributed in the free pore volume.