The effect of PQ concentration on holographic data storage in PQ/PMMA material

Zeyi Zeng; Po Hu; Jianying Hao; Junchao Jin; Jinhong Li; Jie Liu; Junhui Wu; Qingdong Li; Xiao Lin

doi:10.1117/12.2650911

14 March 2023 The effect of PQ concentration on holographic data storage in PQ/PMMA material

Zeyi Zeng, Po Hu, Jianying Hao, Junchao Jin, Jinhong Li, Jie Liu, Junhui Wu, Qingdong Li, Xiao Lin

Proceedings Volume 12444, Ultra-High-Definition Imaging Systems VI; 1244409 (2023) https://doi.org/10.1117/12.2650911
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Phenanthraquinone-doped polymethyl methacrylate (PQ/PMMA) photopolymers with excellent characteristics of simplicity for manufacture, negligible photo-induced volume shrinkage, low cost, and high resolution for holographic data storage. In this paper, we explored the phenomenon of different PQ concentrations of PQ/PMMA photopolymers on collinear holography system. By designing a set of control experiments with different PQ doping ratios of 0.5%, 0.7%, 0.9%, 1% and 1.1% (1% means the ratio of monomer, thermal-initiator and photo-initiator are Methyl methacrylate:2,2'- Azobis(2-methylpropionitrile): PQ=100:1:1). And the Bit Error Rate (BER) of the reconstructed image using different PQ/PMMA photopolymers were measured, and we found that, at the value of the BER of 0.05, the material of 1% PQ/PMMA can last a longer time than other different PQ concentrations from 0.5% to 0.9% of PQ/PMMA at a recording beam intensity exposure. The 1.1% PQ/PMMA and the 1% PQ/PMMA can achieve the BER of 0.05 at the same time, but the 1.1% PQ/PMMA only last half time of the 1% PQ/PMMA. Furthermore, the diffraction efficiency has an obvious increase with the increase of the PQ concentrations from 0.5% to 1.0% of PQ/PMMA (from 10% to 60%), while it tends to decrease as the PQ concentration continues to increase to 1.1% due to the poor solubility. In summary, from the BER and holographic grating diffraction efficiency result, we got the optimal concentration of PQ in the PQ/PMMA photopolymer is 1%, and the current study is very meaningful for the use of PQ/PMMA in collinear holography data storage.

Conference Presentation

Citation Download Citation

Zeyi Zeng, Po Hu, Jianying Hao, Junchao Jin, Jinhong Li, Jie Liu, Junhui Wu, Qingdong Li, and Xiao Lin "The effect of PQ concentration on holographic data storage in PQ/PMMA material", Proc. SPIE 12444, Ultra-High-Definition Imaging Systems VI, 1244409 (14 March 2023); https://doi.org/10.1117/12.2650911

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