中国激光, 2019, 46 (8): 0808001, 网络出版: 2019-08-13
基于双缺陷一维光子晶体的非线性激光限幅方法 下载: 957次
Nonlinear Laser-Limiting Method Based on One-Dimensional Photonic Crystals with Double Defects
摘要
提出了一种基于双缺陷一维光子晶体的非线性激光限幅方法。研究了光子晶体透射谱中心波长随双缺陷层折射率变化的规律,设计了适用于532 nm与1064 nm波长的非线性光子晶体激光限幅结构,实现了弱光的高透射和强光的高阻断效果。所设计的激光限幅结构为(AB)6CAC(AB)6双缺陷一维光子晶体,适用于532 nm的光子晶体结构中的三种介质A、B和C分别为金刚石、SrF2和CS3-68玻璃,对弱光的透过率为86.4%,对强光的透过率为0.02%;适用于1064 nm的光子晶体结构中的三种介质A、B和C分别为金刚石、CeF3和CdTe,对弱光的透过率为79.8%,对强光的透过率为0.3%。
Abstract
This study proposes a new nonlinear laser-limiting method based on a one-dimensional photonic crystal with double defects. Further, the variation in the center wavelength of the transmission spectrum of a photonic crystal with the refractive index of the double defect layer is studied. The laser-limiting structures of nonlinear photonic crystals operating at 532 nm and 1064 nm are designed using the proposed method, and the high transmission of weak light and high blocking of strong light are achieved. The designed laser-limiting structure, (AB)6CAC(AB)6, is an one-dimensional photonic crystal with double defects. The laser-limiting structure used for 532 nm laser employs three types of media (A, B, and C), namely diamond, SrF2, and CS3-68 glass, respectively. The optical transmittance of this laser-limiting structure for weak light is 86.4%, and that for strong light is 0.02%. In contrast, the laser-limiting structure used for 1064 nm laser employs three types of media (A, B, and C), namely diamond, CeF3, and CdTe, respectively. The optical transmittance for weak light is 79.8% and that for strong light is 0.3%.
申家岭, 路元刚, 马海霞, 王吉明, 徐锋, 左敦稳. 基于双缺陷一维光子晶体的非线性激光限幅方法[J]. 中国激光, 2019, 46(8): 0808001. Jialing Shen, Yuangang Lu, Haixia Ma, Jiming Wang, Feng Xu, Dunwen Zuo. Nonlinear Laser-Limiting Method Based on One-Dimensional Photonic Crystals with Double Defects[J]. Chinese Journal of Lasers, 2019, 46(8): 0808001.