用于平面波导的体全息光栅设计和制备  

Design and Fabrication of Volume Holographic Grating in Planar Waveguide System

作　　者：冯奇斌[1] 徐立业 张乐 朱标 袁烨 杨新军 吕国强[3] FENG Qibin;XU Liye;ZHANG Le;ZHU Biao;YUAN Ye;YANG Xinjun;LYU Guoqiang(Academy of Photoelectric Technology,Hefei University of Technology,Hefei 230009,CHN;School of Physics,Hefei University of Technology,Hefei 230009,CHN;School of Instrumentation and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,CHN;AVIC Hua Dong Photoelectric Co.,Ltd.,Wuhu Anhui 241002,CHN)

机构地区：[1]合肥工业大学,光电技术研究院,合肥230009 [2]合肥工业大学,物理学院,合肥230009 [3]合肥工业大学,仪器科学与光电工程学院,合肥230009 [4]中航华东光电有限公司,安徽芜湖241002

出　　处：《光电子技术》2022年第2期119-122,137,共5页Optoelectronic Technology

基　　金：安徽省科技重大专项(No.201903a05020057)。

摘　　要：设计了一种不对称反射式体全息光栅以实现大角带宽和高衍射效率。讨论了记录角度和衍射效率的关系,获得几组衍射效率较高的记录角度的组合。分析这些组合的角带宽,确定记录角度。采用全息干涉法制备了体全息光栅。实验结果表明:在记录角度是10°和59°时,角带宽为24°,衍射效率为90%,但峰值波长出现偏移,调整记录角度以改善波长偏移。设计的体全息光栅具有较大角带宽的同时,保持了较高的衍射效率,具有较高的实际应用价值。An asymmetrical reflection VHG with large angular bandwidth and high diffraction efficiency was designed.The relationship between the recording angles and the diffraction efficiency was discussed at first and several combinations of the recording angles were found.The relationship between the recording angles and the angular bandwidth was furtherly analyzed,which could obtain the optimal recording setup.The experimental results showed that when the incident angle of the reference light and signal light was 10° and 59°,the angular bandwidth of the fabricated VHG could reach24° and the diffraction efficiency 90%.However,the wavelength shift could happen.The recording angle was modified to improve wavelength shift.The method proposed could help design a VHG with large angular bandwidth and high diffraction efficiency and present great practical value.

关 键 词：体全息光栅 衍射效率 角带宽 

分 类 号：TN26[电子电信—物理电子学]