Liu Peng, Sun Xiudong
College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, China.
Institute of Modern Optics, School of Physics, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Key Laboratory of Micro-Optics and Photonic Technology of Heilongjiang Province, Harbin Institute of Technology, Harbin 150001, China.
Polymers (Basel). 2023 Mar 16;15(6):1486. doi: 10.3390/polym15061486.
We propose the holographic reciprocity effect (HRE) to describe the relationship between the exposure duration (ED) and the growth rate of diffraction efficiency (GRoDE) in volume holographic storage. The HRE process is investigated experimentally and theoretically in order to avoid the diffraction attenuation. Herein, introducing the medium absorption, we present a comprehensive probabilistic model to describe the HRE. PQ/PMMA polymers are fabricated and investigated to reveal the influence of HRE on the diffraction characteristics through two recording approaches: pulsed exposure with nanosecond (ns) level and continuous wave (CW) exposure at the millisecond (ms) level. We obtain the holographic reciprocity matching (HRM) range of ED in PQ/PMMA polymers with 10~10 s level and improve the response time to microsecond (μs) order with no diffraction deficiency. This work can promote the application of volume holographic storage in high-speed transient information accessing technology.
我们提出全息互易效应（HRE）来描述体全息存储中曝光持续时间（ED）与衍射效率增长率（GRoDE）之间的关系。为了避免衍射衰减，对HRE过程进行了实验和理论研究。在此，考虑介质吸收，我们提出了一个综合概率模型来描述HRE。制备并研究了PQ/PMMA聚合物，通过两种记录方式揭示HRE对衍射特性的影响：纳秒（ns）级脉冲曝光和毫秒（ms）级连续波（CW）曝光。我们获得了PQ/PMMA聚合物中ED的全息互易匹配（HRM）范围为10~10 s级，并将响应时间提高到微秒（μs）级，且无衍射缺陷。这项工作可以推动体全息存储在高速瞬态信息访问技术中的应用。
