铌酸锂波导上基于模式相位匹配的差频产生(特邀)  

Difference-Frequency Generation in Lithium-Niobate-on-Insulator Waveguide Based on Modal Phase Matching(Invited)

作　　者：杜昊阳 张秀全 王磊[1] 陈峰[1] Du Haoyang;Zhang Xiuquan;Wang Lei;Chen Feng(School of Physics,Shandong University,Jinan 250100,Shandong,China;Key Laboratory of Laser&Infrared System,Ministry of Education,Shandong University,Qingdao 266237,Shandong,China)

机构地区：[1]山东大学物理学院,山东济南250100 [2]山东大学激光与红外系统教育部重点实验室,山东青岛266237

出　　处：《激光与光电子学进展》2024年第11期24-28,共5页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2019YFA0705000);山东大学教育教学改革项目(2023Y303)。

摘　　要：差频过程可以实现非线性波长转换,也是生成长波长相干光的重要手段。在薄膜铌酸锂平台上实现了基于模式相位匹配的差频转换。实验结果表明,通过调整信号光的波长,能够在整个信号光源带宽范围内实现差频信号的收集。此外,通过调整耦合入波导的信号光强度,得到了188%·W^(-1)的片上差频转换效率。该实验研究结果在光纤通信波段的多波长频率转换以及未来的全光通信网络等领域具有重要的应用前景。Difference-frequency generation enables optical nonlinear-wavelength conversion and is vital for generating coherent light at long wavelengths.In this study,we demonstrate modal-phase-matched difference-frequency generation on a thin-film lithium-niobate platform.By varying the wavelength of the signal light,difference-frequency generation is realized across the entire spectrum of the signal laser.In addition,by manipulating the power of the signal light coupled into the waveguide,an on-chip conversion efficiency of 188%·W^(-1) is achieved.Experimental results show that the proposed method is promising for multiwavelength frequency conversion in optical communication and future all-optical communication networks.

关 键 词：非线性光学 铌酸锂 光波导 模式相位匹配 

分 类 号：O437[机械工程—光学工程]