Enhanced nonlinear optical properties of LiNbO3 crystal embedded with CuZn alloy nanoparticles by ion implantation
Enhanced nonlinear optical properties of LiNbO3 crystal embedded with CuZn alloy nanoparticles by ion implantation
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通过离子注入增强嵌入 CuZn 合金纳米粒子的 LiNbO3 晶体的非线性光学性能
DOI：
10.1016/j.jallcom.2018.11.182
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发表时间：
2019
影响因子：
6.2
通讯作者：
Liu Changlong
中科院分区：
文献类型：
--
作者：
Wang Yingying;Niu Yixiao;Wang Gang;Sun Yongjie;Liu Changlong
linbo3晶体作为一种典型的非线性光学材料，在光子器件的应用中引起了广泛的关注。然而，由于激光损伤阈值较低，linbo3表现出较弱的非线性光学响应。本文通过诱导CuZn合金纳米颗粒（NPs）增强了linbo3的光学非线性。详细研究了嵌入NPs的linbo3的结构和光学性质。由于局域表面等离子体共振效应，CuZn: linbo3纳米复合材料的三阶非线性磁化率比未处理的linbo3高出近4个数量级。此外，与纯LiNbO3相比，纳米复合材料从反饱和吸收转变为饱和吸收。这一特性使纳米复合材料成为一种潜在的饱和吸收材料，从而实现高效的脉冲激光器。
LiNbO3crystal, as a typical nonlinear optical material, has attracted considerable interest in photonic device applications. However, LiNbO3shows weak nonlinear optical responses due to its low laser damage threshold. Herein, the optical nonlinearities of LiNbO3are enhanced by inducing CuZn alloy nanoparticles (NPs). The structural and optical properties of LiNbO3with embedded NPs were investigated in detail. The third-order nonlinear susceptibilities of CuZn: LiNbO3nanocomposites exhibit nearly 4 orders of magnitude greater than the untreated LiNbO3due to the localized surface plasmon resonance effect. Furthermore, the nanocomposites suffer conversion from reverse-saturable absorption to saturable absorption compared with the pure LiNbO3. This feature makes the nanocomposites a potential saturable absorber leading to the realization of efficient pulse lasers.