Nanoscale
·
2018
·Vol. 11
·期 4
·1762-1769
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IF 7.233
Guangju Zhang,Xian Tang,Xing Fu,Weicheng Chen,Babar Shabbir,Han Zhang,Qiang Liu,Mali Gong
A new derivative of antimonene named fluorinated antimonene was synthesized using the method of ionic liquid-assisted electrochemical exfoliation and synchronous fluorination. Passive Q-switched pulses were produced from a Nd:LuAG laser with fluorinated antimonene, having a pulse width of 326.7 ns and a repetition rate of 733.1 kHz demonstrating its potential application as a saturable absorber. Density functional theory calculations revealed that compared with pure antimonene with an indirect bandgap, fluorinated antimonene exhibits a direct bandgap modulated by the fluorination degree showing that fluorinated antimonene would be applied as optical devices beyond its application as a saturable absorber.
研究领域:
材料科学
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光学
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理论计算
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产品关联
DOI
PubMed
高影响因子
Optical Materials Express
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2020
·Vol. 10
·期 10
·2480-2490
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IF 3.064
Meng Wang,Meng Wang,Meng Wang,Shaolong Huang,Yu-Jia Zeng,Ruqing Huang,Dalin Sun,Meng Wang,Jihong Pei,Shuangchen Ruan,Shuangchen Ruan
Wideband optical saturable absorbers (SA) are an ideal laser component for pulse laser generation in different wavelengths, which has attracted tremendous attention in recent years. Herein, a MoO3-x-based novel wideband optical SA has been demonstrated by utilizing it for ∼1/1.5/2 μm Q-switched pulses generation. After separately integrating the MoO3-x-SA into Yb-, Er- and Tm-doped fiber lasers, passively Q-switched pulses with pulse durations of ∼1.5/2.2/1.6 μs, repetition rates of several tens kilohertz at corresponding wavelengths of ∼1038/1562.9/1910 nm are obtained. Our work firstly reveals the remarkable wideband optical saturable absorption of the MoO3-x, which strongly implies the potential application in infrared photonics devices. It may also provide new opportunities for wideband optical SA based on oxygen-deficient metal oxides.
研究领域:
光学
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材料科学
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激光技术
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 3
·720
·
IF 5.076
Yunjia Wang,Jianwen Wang,Qiao Wen
Owing to their unique characteristics, two-dimensional (2-D) materials and their complexes have become very attractive in photoelectric applications. Two-dimensional heterojunctions, as novel 2-D complex materials, have drawn much attention in recent years. Herein, we propose a 2-D heterojunction composed of MXene (Ti2CTx) materials and graphene oxide (GO), and apply it to an Nd:YAG solid-state laser as a saturable absorber (SA) for passive Q-switching. Our results suggest that a nano-heterojunction between MXene and GO was achieved based on morphological characterization, and the advantages of a broadband response, higher stability in GO, and strong interaction with light waves in MXene could be combined. In the passively Q-switched laser study, the single-pulse energy was measured to be approximately 0.79 µJ when the pump power was 3.72 W, and the corresponding peak power was approximately 7.25 W. In addition, the generation of a stable ultrashort pulse down to 109 ns was demonstrated, which is the narrowest pulse among Q-switched solid-state lasers using a 2-D heterojunction SA. Our work indicates that the MXene–GO nano-heterojunction could operate as a promising SA for ultrafast systems with ultrahigh pulse energy and ultranarrow pulse duration. We believe that this work opens up a new approach to designing 2-D heterojunctions and provides insight into the formation of new 2-D materials with desirable photonic properties.Keywords:MXene;saturable absorber;heterojunction;Q-switched;pulsed laser;nonlinear optics;bulk laser
研究领域:
光学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2022
·
IF 4.171
Xiaoli Zhang,Youwei Zhang,Ruiqiang Xu,Jianbin Pan,Lei Hu,Weijia Duan,Weiren Zhao
Saturable absorbers (SAs) are essential devices for laser generation through passive Q-switch or mode-locking methods. Quantum-confined nanocrystals as excellent SAs have been attracted much attention. Self-assembled CsPbBr 3 nanoplatelets (NPLs) were prepared at room temperature , which indicated nonlinear optical transmission with the modulation depth and the saturable intensity of 13.88% and 1.75 MW cm −2 , respectively. The maximum repetition rate of CsPbBr 3 NPLs is 1466 kHz, while corresponding pulse width is 69 ns. The nonlinear optical performance of CsPbBr 3 NPLs indicate its potential applications in optical communication , laser pulses and nonlinear optics .
研究领域:
光学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Muhammad Sohail,Zulfiqar Ali,M. Sohail,Areej S. Alqarni,Intikhab Alam,Nimra Razzaq,Fazl ullah,Qiuyun Ouyang
Halide perovskites, particularly cesium lead iodide (CsPbI3), have garnered significant attention due to their remarkable properties, including strong absorbance across the visible to near-infrared spectrum and a unique electronic structure that enhances their nonlinear optical (NLO) and optoelectronic applications. In this study, CsPbI3 was synthesized using a hot injection technique and incorporated into a methyl methacrylate (MMA) matrix through polymerization to form CsPbI3/PMMA organic glasses. The NLO properties of these glasses were characterized using the Z-scan technique with a nanosecond pulse laser at an excitation wavelength of 532 nm. Notably, the CsPbI3/PMMA organic glasses exhibited a transition from saturable absorption (SA) to reverse saturable absorption (RSA) upon adjusting the input energy. Furthermore, by integrating a fiber ferrule coating-based CsPbI3 saturable absorber (SA) into the laser cavity, we successfully realized a passively Q-switching (PQS) laser with a minimum pulse duration of 4.7 μs and a signal-to-noise ratio (SNR) of 50 dB at 1.55 μm, respectively. Consequently, the experimental findings indicate that CsPbI3NP-based saturable absorbers (SAs) exhibit performance characteristics that are either comparable to or surpass those of conventional nanoparticle-based SAs. This observation underscores the significant potential of CsPbI3-based SAs for applications in pulsed laser sources, suggesting their viability as advanced materials for enhancing laser performance and stability.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Xiaoxu Yu,Hualei Yuan,Zhongben Pan,Han Pan,Hongwei Chu,Dechun Li
Recently, mid-infrared photonics has attracted tremendous attention for various applications. To address the dilemma of the limited variety of materials for mid-infrared photonics, the mid-infrared optical modulation characteristics of the porous nano-grained cuprous selenide (Cu 2 Se) were investigated for the first time. The large effective nonlinear absorption coefficient, large modulation depth, and low saturation absorption intensity at 2.3 μm indicate that the porous nano-grained Cu 2 Se were promising saturable absorbers for the generation of Q-switched pulsed laser in the mid-infrared regime. As an application, the Tm:GdVO 4 passively Q-switched laser operating on the 3 H 4 → 3 H 5 Tm 3+ transition was achieved for the first time by using the prepared porous nano-grained Cu 2 Se as the saturable absorber. The minimum pulse duration and the maximum repetition rate of the stable Q-switched pulse train were 440 ns and 76.9 kHz, respectively. Our results demonstrated that the porous nano-grained Cu 2 Se was a promising candidate for the mid-infrared photonic applications.
研究领域:
材料科学
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光学工程
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光子学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
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2021
·Vol. 9
·期 18
·5893-5898
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IF 7.393
Tenghui Chen,Zhongjun Li,Chunxiang Zhang,Zhenhong Wang,Mulin Luo,Yuan Zhang,Yachao Wang,Quanlan Xiao,Han Zhang,Jun Liu
Mid-infrared (mid-IR) pulse modulation components are extremely limited and are not very effective. By fabricating a novel broadband two-dimensional (2D) material, indium selenide (InSe), and adopting it as the passive saturable absorber (SA), we demonstrate a stable Q-switched Er-ZBLAN fiber laser at 2.8 μm. The stable Q-switching pulses can be maintained from the lasing pump threshold to the maximum pump power of 8.69 W, with the pulse repetition frequency ranging from 70.4 kHz to 253.2 kHz and the shortest pulse width of 423.2 ns. The obtained maximum value of average output power in this experiment is 712 mW, and the corresponding maximum pulse energy and peak power are 2.81 μJ and 5.71 W, respectively. The signal-to-noise ratio (SNR) of the laser output is 43.66 dB, which is larger than the majority of the passively Q-switched mid-IR fiber lasers reported so far. Besides, the nonlinear optical response at a mid-IR wavelength of ∼2.8 μm is also investigated. The experimental results demonstrate that the InSe material has great potential in mid-infrared pulse modulation and generation, and its performance can be comparable or even superior to the widely used SESAM.
研究领域:
光学材料
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激光技术
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光电子学
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2022
·Vol. 3
·期 18
·7037-7042
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IF 0
Xiaoli Zhang,Yajun Lou,Lei Hu,Weijia Duan,Guojie Chen,Bingfeng Fan,Weiren Zhao,Xinhai Zhang
InP-based quantum dots (QDs) have attracted considerable interest in the optoelectronic field owing to their favorable properties. However, to date, the nonlinear optical properties and ultrafast photonics applications of InP-based QDs have rarely been explored. In this study, InP/ZnSe/ZnS QDs with surface fluorination treatment (InP-HF) have been fabricated. Consequently, the nonlinear saturable absorption properties of such InP-HF QDs with surface modification are explored by realizing a modulation depth of 3.27% and a saturable intensity of 1.10 MW cm−2. We report on the passive Q-switching of a diode-pumped Nd:YVO4 near-infrared laser at 1064 nm (∼1.0 μm) using InP-HF QDs as a SA. At this wavelength, the threshold of pump power is as low as 1 W, and the maximum average output power and the shortest pulse widths are 2.5 W and 178 ns, respectively. The laser results suggest that surface fluorination treated InP-HF QDs could be very promising for generating ultrashort pulse visible lasers.
研究领域:
光学
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材料科学
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光电子学
✓ 已验证
产品关联
DOI
Science China-Information Sciences
·
2019
·Vol. 62
·期 12
·1-8
·
IF 2.731
Wang Tao,Shi Xinyao,Wang Jin,Xu Yijun,Chen Jie,Dong Zhuo,Jiang Man,Ma Pengfei,Su Rongtao,Ma Yanxing,Wu Jian,Zhang Kai,Zhou Pu
Vanadium diselenide (VSe 2 ), a typical metallic behaviour material among transition metal dichalcogenides (TMDCs) family, exhibits excellent photoelectric characteristics with a zero band gap, missing applicaiotn in pulse generation. In this work, a high-quality VSe 2 saturable absorber (SA) was synthesized through a liquid-phase exfoliation method. The saturable absorption of obtained VSe 2 -SA was characterized systematically. The measured modulation depth was 9.9%, and the saturated intensity was 533.8 µJ/cm 2 . By incorporating this optical modulator into a ytterbium-doped fiber laser cavity, a stable passively Q-switched laser could be achieved. The pulse had the central wavelength of 1064.03 nm. As the pump power was increased, the repetition rate increased from 24.3 kHz to 35.6 kHz, and the pulse duration decreased from 7.21 µs to 5.27 µs. The output power had the maximum value of 28.55 mW. These results indicated that VSe 2 is an effective candidate to generate pulse laser due to its excellent nonlinear optical properties and universal photoelectric response, which may advance the applications of VSe 2 -based nonlinear optics and photoelectric devices.
研究领域:
光子学
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凝聚态物理
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纳米材料科学
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非线性光学
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激光技术
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二维材料
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光电功能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）