Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal.
Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal.
复制标题
三维非线性光子晶体中的准相位匹配分割复用全息术
DOI:
10.1038/s41377-021-00588-5
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发表时间:
2021-07-15
期刊:
影响因子:
--
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Chen P;Wang C;Wei D;Hu Y;Xu X;Li J;Wu D;Ma J;Ji S;Zhang L;Xu L;Wang T;Xu C;Chu J;Zhu S;Xiao M;Zhang Y
Nonlinear holography has recently emerged as a novel tool to reconstruct the encoded information at a new wavelength, which has important applications in optical display and optical encryption. However, this scheme still struggles with low conversion efficiency and ineffective multiplexing. In this work, we demonstrate a quasi-phase-matching (QPM) -division multiplexing holography in a three-dimensional (3D) nonlinear photonic crystal (NPC). 3D NPC works as a nonlinear hologram, in which multiple images are distributed into different Ewald spheres in reciprocal space. The reciprocal vectors locating in a given Ewald sphere are capable of fulfilling the complete QPM conditions for the high-efficiency reconstruction of the target image at the second-harmonic (SH) wave. One can easily switch the reconstructed SH images by changing the QPM condition. The multiplexing capacity is scalable with the period number of 3D NPC. Our work provides a promising strategy to achieve highly efficient nonlinear multiplexing holography for high-security and high-density storage of optical information.
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