中国物理B ›› 2022, Vol. 31 ›› Issue (10): 104208-104208.doi: 10.1088/1674-1056/ac6edc

所属专题: SPECIAL TOPIC — Optical field manipulation

• SPECIAL TOPIC—Optical field manipulation • 上一篇    下一篇

Phase-matched second-harmonic generation in hybrid polymer-LN waveguides

Zijie Wang(王梓杰)1, Bodong Liu(刘伯东)1, Chunhua Wang(王春华)2,†, and Huakang Yu(虞华康)1,3,‡   

  1. 1. School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China;
    2. School of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China;
    3. China-Singapore International Joint Research Institute, Guangzhou Knowledge City, Guangzhou 510663, China
  • 收稿日期:2022-02-23 修回日期:2022-04-22 出版日期:2022-10-16 发布日期:2022-09-24
  • 通讯作者: Chunhua Wang, Huakang Yu E-mail:wangch0515@163.com;hkyu@scut.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91850107 and 12174116), the National Key Research and Development Program of China (Grant No. 2018YFA0306200), Guangdong Innovative and Entrepreneurial Research Team Program (Grant No. 2016ZT06C594), the Key Program of Guangzhou Scientific Research Special Project (Grant No. 201904020013), the Science and Technology Project of Guangdong Province, China (Grant No. 2020B010190001), and the Fundamental Research Funds for the Central Universities.

Phase-matched second-harmonic generation in hybrid polymer-LN waveguides

Zijie Wang(王梓杰)1, Bodong Liu(刘伯东)1, Chunhua Wang(王春华)2,†, and Huakang Yu(虞华康)1,3,‡   

  1. 1. School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China;
    2. School of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China;
    3. China-Singapore International Joint Research Institute, Guangzhou Knowledge City, Guangzhou 510663, China
  • Received:2022-02-23 Revised:2022-04-22 Online:2022-10-16 Published:2022-09-24
  • Contact: Chunhua Wang, Huakang Yu E-mail:wangch0515@163.com;hkyu@scut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91850107 and 12174116), the National Key Research and Development Program of China (Grant No. 2018YFA0306200), Guangdong Innovative and Entrepreneurial Research Team Program (Grant No. 2016ZT06C594), the Key Program of Guangzhou Scientific Research Special Project (Grant No. 201904020013), the Science and Technology Project of Guangdong Province, China (Grant No. 2020B010190001), and the Fundamental Research Funds for the Central Universities.

摘要: Here we propose a hybrid polymer-LN waveguide for achieving phase-matched second-harmonic generation (SHG). From the aspect of super-mode theory, the geometric parameters of the hybrid semi-nonlinear waveguide were optimized to utilize both symmetric (even) and antisymmetric (odd) modes of the pump and SHG waves so as to facilitate phase matching with large modal overlap. Phase matching between a fundamental even (TE00-like) mode at 1320 nm and a fundamental odd (TE01-like) mode at 660 nm was found with a calculated modal overlap integral of 0.299, while utilizing the largest nonlinear coefficient d33, and achieving an efficient calculated normalized conversion efficiency of 148% W-1·cm-2. Considering the fabrication feasibility of such hybrid waveguide with features including etchless, large dimension, and low structural sensitivity, we believe our findings would provide a useful reference for future on-chip efficient nonlinear conversion devices.

关键词: nonlinear waveguides, super-mode theory, phase matching, second harmonic generation

Abstract: Here we propose a hybrid polymer-LN waveguide for achieving phase-matched second-harmonic generation (SHG). From the aspect of super-mode theory, the geometric parameters of the hybrid semi-nonlinear waveguide were optimized to utilize both symmetric (even) and antisymmetric (odd) modes of the pump and SHG waves so as to facilitate phase matching with large modal overlap. Phase matching between a fundamental even (TE00-like) mode at 1320 nm and a fundamental odd (TE01-like) mode at 660 nm was found with a calculated modal overlap integral of 0.299, while utilizing the largest nonlinear coefficient d33, and achieving an efficient calculated normalized conversion efficiency of 148% W-1·cm-2. Considering the fabrication feasibility of such hybrid waveguide with features including etchless, large dimension, and low structural sensitivity, we believe our findings would provide a useful reference for future on-chip efficient nonlinear conversion devices.

Key words: nonlinear waveguides, super-mode theory, phase matching, second harmonic generation

中图分类号:  (Nonlinear waveguides)

  • 42.65.Wi
42.82.-m (Integrated optics) 52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)) 42.65.-k (Nonlinear optics)