Widely Tunable OPO Spanning From the Violet to Mid-Infrared Based on Aperiodic QPM Crystal

被引：2

作者：

Di, Yuanfeng ^{[1
]}

Gu, Chenglin ^{[1
]}

Zuo, Zhong ^{[1
]}

Peng, Daowang ^{[1
]}

Tang, Lulu ^{[1
]}

Zou, Xing ^{[1
]}

Liu, Yang ^{[1
]}

Luo, Daping ^{[1
]}

Li, Wenxue ^{[1
]}

机构：

[1] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2022年 / 34卷 / 13期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Nonlinear optics; optical parametric oscillators; ultrafast optics; OPTICAL PARAMETRIC OSCILLATOR; HIGH-HARMONIC GENERATION; HIGH-REPETITION-RATE; FREQUENCY COMB; PULSE GENERATION;

D O I：

10.1109/LPT.2022.3179500

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Femtosecond optical parametric oscillators (OPOs) have numerous fundamental applications due to their high conversion efficiency and extensive spectral availability. As a premium alternative, aperiodic quasi-phase-matching crystal can extend the phase-matching bandwidth with its numerous poling periods. In OPO, it can considerably simplify the schematic design and generate broadband spectral coverage. In this study, using an aperiodically poled lithium niobate, we reported a widely tunable broadband OPO generating signal radiation across 1.4-1.8 mu m and idler radiation across 4.0-2.4 mu m. We also investigated the generated harmonics from the violet to near-infrared region, where up to 4th order harmonics (390 nm) upon cascaded quadratic nonlinearity was observed. This scheme demonstrates the potential of aperiodic QPM crystal for broadband OPO sources and provides a promising method for the future exploitation of broadband quasi-phase-matching phenomenon.

引用

页码：683 / 686

页数：4

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