Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching

Changwen Wang; Haozong Zhong; Minghao Ning; Bin Fang; Lin Li; Ya Cheng

doi:10.3390/photonics10010080

Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching

Changwen Wang
, Haozong Zhong
, Minghao Ning
, Bin Fang^*
, Lin Li^*
, Ya Cheng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

We numerically investigate a second harmonic generation (SHG) in a z-cut lithium niobate on insulator (LNOI) waveguide based on type-I mode phase matching (MPM) between two fundamental modes. A mode overlap factor that is close to unity is achieved and the normalized SHG efficiency reaches up to 72.1% W⁻¹cm⁻² at the telecommunication band, together with a large spectral tunability of 2.5 nm/K. Moreover, a bandwidth of about 100 nm for the broad SHG in a 5 mm-long LNOI ridge waveguide is demonstrated with this scheme. This stratagem will inspire new integrated nonlinear frequency conversion methods for versatile applications.

Original language	English
Article number	80
Journal	Photonics
Volume	10
Issue number	1
DOIs	https://doi.org/10.3390/photonics10010080
State	Published - Jan 2023

Keywords

lithium niobate on insulator
nonlinear frequency conversion
phase matching

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10.3390/photonics10010080

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title = "Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching",

abstract = "We numerically investigate a second harmonic generation (SHG) in a z-cut lithium niobate on insulator (LNOI) waveguide based on type-I mode phase matching (MPM) between two fundamental modes. A mode overlap factor that is close to unity is achieved and the normalized SHG efficiency reaches up to 72.1\% W−1cm−2 at the telecommunication band, together with a large spectral tunability of 2.5 nm/K. Moreover, a bandwidth of about 100 nm for the broad SHG in a 5 mm-long LNOI ridge waveguide is demonstrated with this scheme. This stratagem will inspire new integrated nonlinear frequency conversion methods for versatile applications.",

keywords = "lithium niobate on insulator, nonlinear frequency conversion, phase matching",

author = "Changwen Wang and Haozong Zhong and Minghao Ning and Bin Fang and Lin Li and Ya Cheng",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

month = jan,

doi = "10.3390/photonics10010080",

language = "英语",

volume = "10",

journal = "Photonics",

issn = "2304-6732",

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TY - JOUR

T1 - Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching

AU - Wang, Changwen

AU - Zhong, Haozong

AU - Ning, Minghao

AU - Fang, Bin

AU - Li, Lin

AU - Cheng, Ya

PY - 2023/1

Y1 - 2023/1

N2 - We numerically investigate a second harmonic generation (SHG) in a z-cut lithium niobate on insulator (LNOI) waveguide based on type-I mode phase matching (MPM) between two fundamental modes. A mode overlap factor that is close to unity is achieved and the normalized SHG efficiency reaches up to 72.1% W−1cm−2 at the telecommunication band, together with a large spectral tunability of 2.5 nm/K. Moreover, a bandwidth of about 100 nm for the broad SHG in a 5 mm-long LNOI ridge waveguide is demonstrated with this scheme. This stratagem will inspire new integrated nonlinear frequency conversion methods for versatile applications.

AB - We numerically investigate a second harmonic generation (SHG) in a z-cut lithium niobate on insulator (LNOI) waveguide based on type-I mode phase matching (MPM) between two fundamental modes. A mode overlap factor that is close to unity is achieved and the normalized SHG efficiency reaches up to 72.1% W−1cm−2 at the telecommunication band, together with a large spectral tunability of 2.5 nm/K. Moreover, a bandwidth of about 100 nm for the broad SHG in a 5 mm-long LNOI ridge waveguide is demonstrated with this scheme. This stratagem will inspire new integrated nonlinear frequency conversion methods for versatile applications.

KW - lithium niobate on insulator

KW - nonlinear frequency conversion

KW - phase matching

UR - https://www.scopus.com/pages/publications/85146899453

U2 - 10.3390/photonics10010080

DO - 10.3390/photonics10010080

M3 - 文章

AN - SCOPUS:85146899453

SN - 2304-6732

VL - 10

JO - Photonics

JF - Photonics

IS - 1

M1 - 80

ER -

Broadband Second Harmonic Generation in a z-Cut Lithium Niobate on Insulator Waveguide Based on Type-I Modal Phase Matching

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Keywords

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