Chip-scale nonlinear bandwidth enhancement via birefringent mode hybridization

被引：2

作者：

Yuan, Tingge ^{[1
]}

Wu, Jiangwei ^{[1
]}

Wang, Xueyi ^{[1
]}

Chen, Chengyu ^{[1
]}

Li, Hao ^{[1
]}

Wang, Bo ^{[1
]}

Chen, Yuping ^{[1
]}

Chen, Xianfeng ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, State Key Lab Adv Opt Commun Syst & Networks, Shanghai, Peoples R China

[2] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan, Peoples R China

来源：

ADVANCED PHOTONICS | 2024年 / 6卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nonlinear optics; quasi-group-velocity matching; integrated photonics; lithium niobate; PERIODICALLY POLED LINBO3; THIN-FILM; WAVELENGTH CONVERSION; 2ND-HARMONIC GENERATION; SHG;

D O I：

10.1117/1.AP.6.5.056012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

On-chip quantum information network requires qubit transfer between different wavelengths while preserving quantum coherence and entanglement, which requires the availability of broadband upconversion. Herein, we demonstrate a mode-hybridization-based broadband nonlinear frequency conversion on X-cut thin film lithium niobate. With the spontaneous quasi-phase matching and quasi-group-velocity matching being simultaneously satisfied, broadband second-harmonic generation with a 3-dB bandwidth up to 13 nm has been achieved in a micro-racetrack resonator. The same mechanism can work on the frequency conversion of the ultrashort pulse in the bent waveguide structure. This work will be beneficial to on-chip tunable frequency conversion and quantum light source generation on integrated photonic platforms and further enable on-chip large-capacity multiplexing, multichannel optical information processing, and large quantum information networks.

引用

页数：7