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可见光、远红外与多种激光兼容的隐身光子晶体

Compatible Stealth Photonic Crystal for Visible-Light, Far-Infrared, and Multi-Wavelength Lasers

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摘要

为了降低探测设备或制导武器对军事装备的威胁,研究了可见光、远红外与多种激光(0.93,1.06,10.6 μm)兼容的隐身光子晶体薄膜的设计与优化问题。首先分析了已有的远红外与10.6 μm激光兼容的隐身光子晶体的缺陷,主要是10.6 μm激光的隐身性能随其入射角度增大而迅速降低;然后在保证远红外隐身性能的前提下,提出了通过展宽光子局域的方式来优化这一缺陷的思路。对于优化后的光子晶体薄膜,当入射角度在0°~60°内变化时,10.6 μm处的反射率始终保持在20%以下,即提高了10.6 μm激光隐身性能对入射角度的稳定性。在此结构的基础上,通过叠加准周期结构的方式来实现隐身波段向可见光与其他军用激光的拓展。得到的光子晶体薄膜具有黄、绿或蓝的特征,可以用来模拟荒漠、林地或海洋的颜色,并且其在0.93 μm和1.06 μm波长处的反射率随入射角度变化始终保持在10%以下,理论上可以大幅减小该激光的回波功率。

Abstract

In this study, we design and optimize a new type of stealth photonic crystal film for visible-light, far-infrared, and multi-wavelength (i.e., 0.93, 1.06, and 10.6 μm) lasers respectively, to minimize the threats to important military targets from detection equipment and guided weapons. We first analyze the shortcomings of the existing compatible stealth photonic crystal films for far-infrared and 10.6-μm lasers; however, the stealth performance of the 10.6-μm laser rapidly decreases with increasing incident angle. We propose to address this problem by broadening photon localization while ensuring the stealth performance of far-infrared lasers. Therefore, when the incident angle varies from 0° to 60°, the reflectance of the optimized photonic crystal films remains less than 20% at 10.6 μm, which improves the stealth performance stability of the 10.6-μm laser. Further, we expand the stealth bandwidth of the photonic crystal films with respect to visible and other military-sensitive lasers by superimposing quasi-periodic structures into the films. The optimized photonic crystal films exhibit optical characteristics of yellow, green, or blue, which can be used to simulate the color of desert, woodland, or ocean regions, respectively. The reflectance at wavelengths of 0.93 μm and 1.06 μm is observed to be less than 10% with changing incident angle, which, in theory, will significantly reduce the reflected power of the incident lasers.

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DOI:10.3788/LOP56.181602

所属栏目:材料

基金项目:“十三五”预研项目;

收稿日期:2019-01-04

修改稿日期:2019-04-04

网络出版日期:2019-09-01

作者单位    点击查看

王航:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
赵大鹏:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
刘瑞煌:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
张继魁:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
陈宗胜:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
时家明:国防科技大学电子对抗学院, 脉冲功率激光技术国家重点实验室, 安徽 合肥 230037

联系人作者:时家明(Shijiaming66@163.com)

备注:“十三五”预研项目;

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引用该论文

Hang Wang,Dapeng Zhao,Ruihuang Liu,Jikui Zhang,Zongsheng Chen,Jiaming Shi. Compatible Stealth Photonic Crystal for Visible-Light, Far-Infrared, and Multi-Wavelength Lasers[J]. Laser & Optoelectronics Progress, 2019, 56(18): 181602

王航,赵大鹏,刘瑞煌,张继魁,陈宗胜,时家明. 可见光、远红外与多种激光兼容的隐身光子晶体[J]. 激光与光电子学进展, 2019, 56(18): 181602

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