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

Yuanfeng Di; Chenglin Gu; Zhong Zuo; Daowang Peng; Lulu Tang; Xing Zou; Yang Liu; Daping Luo; Wenxue Li

doi:10.1109/LPT.2022.3179500

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

Yuanfeng Di, Chenglin Gu, Zhong Zuo, Daowang Peng, Lulu Tang, Xing Zou, Yang Liu, Daping Luo, Wenxue Li

Institute for Advanced Study in Precision Spectroscopy

East China Normal University

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

2 Scopus citations

Abstract

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 μ m and idler radiation across 4.0-2.4 μ 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.

Original language	English
Pages (from-to)	683-686
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	34
Issue number	13
DOIs	https://doi.org/10.1109/LPT.2022.3179500
State	Published - 1 Jul 2022

Keywords

Nonlinear optics
optical parametric oscillators
ultrafast optics

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10.1109/LPT.2022.3179500

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

abstract = "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 μ m and idler radiation across 4.0-2.4 μ 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.",

keywords = "Nonlinear optics, optical parametric oscillators, ultrafast optics",

author = "Yuanfeng Di and Chenglin Gu and Zhong Zuo and Daowang Peng and Lulu Tang and Xing Zou and Yang Liu and Daping Luo and Wenxue Li",

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doi = "10.1109/LPT.2022.3179500",

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AU - Di, Yuanfeng

AU - Gu, Chenglin

AU - Zuo, Zhong

AU - Peng, Daowang

AU - Tang, Lulu

AU - Zou, Xing

AU - Liu, Yang

AU - Luo, Daping

AU - Li, Wenxue

PY - 2022/7/1

Y1 - 2022/7/1

N2 - 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 μ m and idler radiation across 4.0-2.4 μ 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.

AB - 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 μ m and idler radiation across 4.0-2.4 μ 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.

KW - Nonlinear optics

KW - optical parametric oscillators

KW - ultrafast optics

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IS - 13

ER -

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

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