Locally periodically poled LNOI ridge waveguide for second harmonic generation

被引：16

作者：

Mu, Biao ^{[1
,2
]}

Wu, Xianfang ^{[1
,2
]}

Niu, Yunfei ^{[1
,2
]}

Chen, Yan ^{[1
,2
]}

Cai, Xinlun ^{[3
,4
]}

Gong, Yanxiao ^{[1
,2
]}

Xie, Zhenda ^{[1
,2
]}

Hu, Xiaopeng ^{[1
,2
]}

Zhu, Shining ^{[1
,2
]}

机构：

[1] Nanjing Univ, Coll Elect Sci & Engn, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China

[3] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[4] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510275, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2021年 / 19卷 / 06期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

lithium niobate on insulator; ridge waveguide; ferroelectric domain inversion; second harmonic generation; SUM-FREQUENCY GENERATION; LITHIUM-NIOBATE; THIN-FILM; CONVERSION; EFFICIENCY;

D O I：

10.3788/COL202119.060007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Periodically poled lithium niobate on insulator (LNOI) ridge waveguides are desirable for high-efficiency nonlinear frequency conversions, and the fabrication process of such waveguides is crucial for device performance. In this work, we report fabrication and characterization of locally periodically poled ridge waveguides. Ridge waveguides were fabricated by dry etching, and then the high-voltage pulses were applied to locally poled ridge waveguides. Second harmonic generation with normalized conversion efficiency of 435.5% W-1.cm(-2) was obtained in the periodically poled LNOI ridge waveguide, which was consistent with the triangular domain structure revealed by confocal microscopy.

引用

页数：5

共 23 条

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