同名作者【Ningning Dong】论文列表 -- 中国光学期刊网

同名作者【Ningning Dong】论文列表

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Nonlinear Optics

Microscopic nonlinear optical activities and ultrafast carrier dynamics in layered AgInP₂S₆

Zixin Wang ^1,2Ningning Dong ^1,2,3,4Yu Mao ^1,2Chenduan Chen ^1,2[ ... ]Jun Wang ^1,2,3,*

Author Affiliations

Abstract

¹ Aerospace Laser Technology and Systems Department, CAS Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³ CAS Center for Excellence in Ultra-intense Laser Science (CEULS), State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁴ e-mail: n.n.dong@siom.ac.cn

Since the emergence of graphene, transition metal dichalcogenides, and black phosphorus, two-dimensional materials have attracted significant attention and have driven the development of fundamental physics and optoelectronic devices. Metal phosphorus trichalcogenides (

{MPX}_{3}

), due to their large bandgap of 1.3–3.5 eV, enable the extension of optoelectronic applications to visible and ultraviolet (UV) wavelengths. Micro-Z/I-scan (

μ

-Z/I-scan) and micro-pump-probe (

μ

-pump-probe) setups were used to systematically investigate the third-order nonlinear optical properties and ultrafast carrier dynamics of the representative material

{AgInP}_{2} S_{6}

. UV-visible absorption spectra and density functional theory (DFT) calculations revealed a quantum confinement effect, in which the bandgap decreased with increasing thickness. The two-photon absorption (TPA) effect is exhibited under the excitation of both 520 and 1040 nm femtosecond pulses, where the TPA coefficient decreases as the

{AgInP}_{2} S_{6}

thickness increases. In contrast, the TPA saturation intensity exhibits the opposite behavior that the TPA saturation is more likely to occur under visible excitation. After the valence band electrons undergo photon transitions to the conduction band, the non-equilibrium carriers relax through non-radiative and defect-assisted recombination. These findings provide a comprehensive understanding of the optical response process of

{AgInP}_{2} S_{6}

and are a valuable reference for the development of optoelectronic devices.

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Photonics Research

2024, 12(4): 691

激光与激光光学

飞秒激光诱导二氧化钒光学特性转变（特邀）

王梓鑫 ^1,3,*董宁宁 ^1,3王路路 ^2,3曹逊 ^2,3王俊 ^1,3

作者单位

摘要

¹ 中国科学院上海光学精密机械研究所，上海 201800

² 中国科学院上海硅酸盐研究所，上海 200050

³ 中国科学院大学，北京 100049

为研究激光诱导对二氧化钒光学性质的具体影响，采用磁控溅射技术制备了二氧化钒薄膜。利用原子力显微镜和X射线衍射仪对样品进行表征，发现其具有良好的平整度及致密均匀的结构，是纯相二氧化钒（M）薄膜，并且在透过率-温度变化曲线中观察到了典型的热滞回线。采用透/反射强度扫描系统研究了二氧化钒薄膜的光学特性，实验结果表明，在飞秒激光诱导下样品经历了非线性吸收过程、相变过程、稳态过程和损伤过程，非线性吸收过程由双光子吸收效应主导而相变过程与激光热效应息息相关。进一步研究发现，随着激光重复频率增加，增强的热效应导致其相变开启阈值和损伤阈值明显下降。

二氧化钒飞秒激光诱导半导体-金属相变非线性光学透/反射强度扫描 Vanadium dioxide Femtosecond laser induction Semiconductor-metal phase transition Nonlinear optics T/R I-scan

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光子学报

2022, 51(10): 1014007

综述

二维非线性光限幅材料研究进展

下载：1614次

董宁宁 ¹刘强虎 ²王俊 ^1,*

作者单位

摘要

¹ 中国科学院上海光学精密机械研究所微纳光电子功能材料实验室, 上海 201800

² 中国电子科技集团公司光电研究院光电信息控制和安全技术重点实验室, 天津 300308

随着激光技术的迅速发展,激光**装备日益增多,人眼、光电探测设备和光学系统等越来越多地暴露在强激光环境中,极易受到激光的攻击,激光防护技术变得越来越重要。介绍了激光防护技术的基本概念,总结了几种激光防护方案的优缺点,阐述了基于非线性光学原理的激光防护技术(光限幅技术)的机理。结合国内外研究进展,重点介绍了石墨烯、过渡金属硫化物和黑磷等典型二维半导体非线性光学材料在激光防护方面的应用及其研究进展。

材料超快非线性光学非线性光学材料脉冲激光薄膜光学特性

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中国激光

2021, 48(13): 1300001

Integrated Optics

Multi-gigahertz laser generation based on monolithic ridge waveguide and embedded copper nanoparticles

Download：702次

Chi Pang ¹Rang Li ^1,2Ziqi Li ¹Ningning Dong ³[ ... ]Feng Chen ^1,*

Author Affiliations

Abstract

¹ School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

² Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China

³ Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁴ Department of Physics, Center for Ion Beam Application and Center for Electron Microscopy, Wuhan University, Wuhan 430072, China

Copper (Cu) nanoparticles (NPs) are synthesized under the near-surface region of the

Nd : Y_{3} {Al}_{5} O_{12}

(Nd:YAG) crystal by direct

{Cu}^{+}

ions implantation. Subsequently, the monolithic ridge waveguide with embedded Cu NPs is fabricated by

C^{4 +}

ions irradiation and diamond saw dicing. The nonlinear optical response of the sample is investigated by the Z-scan technique, and pronounced saturable absorption is observed at the 1030 nm femtosecond laser. Based on the obvious saturable absorption of Cu NPs embedded Nd:YAG crystal, 1 μm monolithic mode-locked pulsed waveguide laser is implemented by evanescent field interaction between NPs and waveguide modes, reaching the pulse duration of 24.8 ps and repetition rate of 7.8 GHz. The work combines waveguides with NPs, achieving pulsed laser devices based on monolithic waveguide chips.

waveguide lasers nanoparticles localized surface plasmon resonance saturable absorption

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Chinese Optics Letters

2021, 19(2): 021301

Variable spot size optical system for a dual-wavelength laser therapy device

Ningning Dong ^1,2,*Jinjiang Cui ²Jiangen Xu ²

Author Affiliations

Abstract

¹ Academy for Engineering and Technology, Fudan University, Shanghai 200433, P. R. China

² Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China

The majority of existing high-power laser therapeutic instruments employ a single wavelength for a single target; thus, they do not meet the requirements for clinical treatment. Therefore, this study designs an optical system for a dual-wavelength high-power laser therapeutic device with a variable spot size. The waist of the short arm of the optical cavity and the G1G2 parameter (G-parameter equivalent cavity method) is calculated using MATLAB software, the spot size and divergence angle on the lens are calculated using an ABCD matrix, and the distance between the treatment spot at different spot sizes and the transformation lens is calculated in order to design the treatment handpiece. Experiments are conducted to analyze the stability at an output power of 532 nm before beam combination and the power loss after beam combination. The results show that the output power stability of the 532-nm beam varies by less than 2% over 150 min, and the loss of both wavelengths is less than 20%, which meets the clinical requirements of the system. The safety performance can meet the requirements of national general standards for medical electrical safety. The proposed dual-wavelength laser therapy instrument has both visible wave and near-infrared wave characteristics; thus, it can accurately target both superficial vessels and vessels with a larger diameter and deeper position. This therapeutic device has the advantages of simple operation, stable and reliable laser output, high security and strong anti-interference ability, and meets the comprehensive clinical treatment demands of vascular diseases.

Laser therapy dual wavelength beam combination spot transformation

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Journal of Innovative Optical Health Sciences

2020, 13(4): 2050018

Optical and Photonic Materials

Direct observation of interlayer coherent acoustic phonon dynamics in bilayer and few-layer PtSe₂

Download：801次

Xin Chen ^1,2,3Saifeng Zhang ^1,2,3,8Lei Wang ^1,2,3Yi-Fan Huang ^4,5[ ... ]Jun Wang ^1,2,3,7,*

Author Affiliations

Abstract

¹ Laboratory of Micro-Nano Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³ State Key Laboratory of High Field Laser Physics, CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁴ School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

⁵ STU & SIOM Joint Laboratory for Superintense Lasers and the Applications, Shanghai 201210, China

⁶ Department of Physics, Engineering Physics & Astronomy and Department of Chemistry, Queen’s University, Kingston, K7L-3N6 Ontario, Canada

⁷ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁸ e-mail: sfzhang@siom.ac.cn

This work reports the real-time observation of the interlayer lattice vibrations in bilayer and few-layer

{PtSe}_{2}

by means of the coherent phonon method. The layer-breathing mode and standing wave mode of the interlayer vibrations are found to coexist in such a kind of group-10 transition metal dichalcogenides (TMDCs). The interlayer breathing force constant standing for perpendicular coupling (per effective atom) is derived as 7.5 N/m, 2.5 times larger than that of graphene. The interlayer shearing force constant is comparable to the interlayer breathing force constant, which indicates that

{PtSe}_{2}

has nearly isotropic interlayer coupling. The low-frequency Raman spectroscopy elucidates the polarization behavior of the layer-breathing mode that is assigned to have

A_{1 g}

symmetry. The standing wave mode shows redshift with the increasing number of layers, which successfully determines the out-of-plane sound velocity of

{PtSe}_{2}

experimentally. Our results manifest that the coherent phonon method is a good tool to uncover the interlayer lattice vibrations, beyond the conventional Raman spectroscopy limit. The strong interlayer interaction in group-10 TMDCs reveals their promising potential in high-frequency (

～ terahertz

) micro-mechanical resonators.

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Photonics Research

2019, 7(12): 12001416

Nonlinear optics

Two-photon absorption towards pulse modulation in mechanically exfoliated and CVD monolayer cascaded MoS₂ structures

Download：792次

Yafeng Xie ^1,2Saifeng Zhang ^1,**Xiaoyan Zhang ¹Ningning Dong ¹[ ... ]Jun Wang ^1,5,*

Author Affiliations

Abstract

¹ Laboratory of Micro-Nano Photonic and Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³ State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures of Ministry of Education, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China

⁴ Department of Physics, Engineering Physics & Astronomy and Department of Chemistry, Queen’s University, Kingston K7L-3N6, Ontario, Canada

⁵ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Mechanical exfoliation (ME) and chemical vapor deposition (CVD) MoS₂ monolayers have been extensively studied, but the large differences of nonlinear optical performance between them have never been clarified. Here, we prepared MoS₂ monolayers using ME and CVD methods and investigated the two-photon absorption (TPA) response and its saturation. We found that the TPA coefficient of the ME monolayer was about (1.88 ± 0.21) × 10³ cm/GW, nearly two times that of the CVD one at (1.04 ± 0.15) × 10³ cm/GW. Furthermore, we simulated and compared the TPA-induced optical pulse modulation in multilayer cascaded structures, which is instructive and meaningful for the design of optical devices such as a beam shaper and optical limiter.

190.4400 Nonlinear optics, materials 160.4236 Nanomaterials 190.5970 Semiconductor nonlinear optics including MQW 020.4180 Multiphoton processes

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Chinese Optics Letters

2019, 17(8): 081901

Optical and Photonic Materials

Layer-modulated two-photon absorption in MoS₂: probing the shift of the excitonic dark state and band-edge

Download：792次

Yafeng Xie ^1,2Saifeng Zhang ^1,6Yuanxin Li ¹Ningning Dong ¹[ ... ]Jun Wang ^1,2,5,*

Author Affiliations

Abstract

¹ Laboratory of Micro-Nano Optoelectronic Materials and Devices and CAS Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³ School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

⁴ Department of Physics, Engineering Physics & Astronomy and Department of Chemistry, Queen’s University, Kingston, Ontario K7L-3N6, Canada

⁵ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

⁶ e-mail: sfzhang@siom.ac.cn

Questions hovering over the modulation of bandgap size and excitonic effect on nonlinear absorption in two-dimensional transition metal dichalcogenides (TMDCs) have restricted their application in micro/nano optical modulator, optical switching, and beam shaping devices. Here, degenerate two-photon absorption (TPA) in the near-infrared region was studied experimentally in mechanically exfoliated

{MoS}_{2}

from single layer to multilayer. The layer-dependent TPA coefficients were significantly modulated by the detuning of the excitonic dark state (

2 p

). The shift of the quasiparticle bandgap and the decreasing of exciton binding energy with layers were deduced, combined with the non-hydrogen model of excitons in TMDCs and the scaling rule of semiconductors. Our work clearly demonstrates the layer modulation of nonlinear absorption in TMDCs and provides support for layer-dependent nonlinear optical devices, such as optical limiters and optical switches.

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Photonics Research

2019, 7(7): 07000762

Q-switching of waveguide lasers based on graphene/WS2 van der Waals heterostructure

Download：1008次

Ziqi Li ¹Chen Cheng ¹Ningning Dong ²Carolina Romero ³[ ... ]Feng Chen ^1,*

Author Affiliations

Abstract

¹ School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

² Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

³ Laser Microprocessing Group, Facultad Ciencias, Universidad de Salamanca, Salamanca 37008, Spain

⁴ School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

We report on the operation of passively Q-switched waveguide lasers at 1 μm wavelength based on a graphene/WS2 heterostructure as a saturable absorber (SA). The gain medium is a crystalline Nd:YVO4 cladding waveguide produced by femtosecond laser writing. The nanosecond waveguide laser operation at 1064 nm has been realized with the maximum average output power of 275 mW and slope efficiency of 37%. In comparison with the systems based on single WS2 or graphene SA, the lasing Q-switched by a graphene/WS2 heterostructure SA possesses advantages of a higher pulse energy and enhanced slope efficiency, indicating the promising applications of van der Waals heterostructures for ultrafast photonic devices.

(230.7370) Waveguides (140.3540) Lasers Q-switched (130.0130) Integrated optics (160.4236) Nanomaterials.

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Photonics Research

2017, 5(5): 05000406

激光物理

垂直腔面发射半导体激光器单管的光束质量研究

崔锦江 ^1,*董宁宁 ¹徐建根 ¹许杰 ²林涛 ³

作者单位

摘要

¹ 中国科学院苏州生物医学工程技术研究所，江苏苏州 215163

² 南京理工大学，江苏南京 210094

³ 江苏省医疗器械检验所，江苏南京 210000

研究了大功率底发射垂直腔面发射激光器（VCSEL）单管器件光束质量，分析了电流、出光孔径、衬底厚度等因素对M2因子、远场发散角、近场及远场光强分布等的影响。使用有限元的方法对不同电极及不同氧化孔径时有源区中电流密度的分布进行了计算，为了获得高功率、高光束质量的VCSEL器件，选择氧化孔径为650 μm以及P面电极直径为580 μm，在对电流进行有效限制的同时实现了有源区中电流密度的均匀分布，从而抑制远场光斑中边模的产生，改善了光束质量。

激光器垂直腔面发射激光器单管器件光束质量

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中国激光

2015, 42(s1): s102007

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