JOURNAL OF ALLOYS AND COMPOUNDS
·
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
·
光学工程
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 14
·2116
·
IF 5.3
Li Zhang,Xinxin Li,Yimeng Song,Bingsuo Zou
In recent years, all-inorganic cesium lead bromide (CsPbBr3) perovskites have garnered considerable attention for their prospective applications in green photonics and optoelectronic devices. However, the development of efficient and economical methods to obtain high-quality micron-sized single-crystalline CsPbBr3microplatelets (MPs) has become a challenge. Here, we report the synthesis of CsPbBr3MPs on Si/SiO2substrate by optimizing the ultrafast antisolvent method (FAS). This technique is able to produce well-dispersed, uniformly sized, and morphologically regular tetragonal phase single crystals, which can give strong green emission at room temperature, with excellent stability and excitonic character. Moreover, the crystals demonstrated lasing with a whispering gallery mode with a low threshold. These results suggest that the single-crystalline CsPbBr3MPs synthesized by this method are of high optical quality, holding vast potential for future applications in photonic devices.Keywords:perovskites;fast growth;microstructures;lasing;photonics
研究领域:
材料科学
·
光学工程
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产品关联
DOI
PubMed
高影响因子
Photonics Research
·
2021
·Vol. 10
·期 1
·50-58
·
IF 7.08
Yonghua Wang,Su He,Xiaoyan Gao,Piaopiao Ye,Lei Lei,Lei Lei,Wenchan Dong,Wenchan Dong,Wenchan Dong,Xinliang Zhang,Xinliang Zhang,Ping Xu
Silicon photonic integrated devices used for nonlinear optical signal processing play a key role in ultrafast switching, computing, and modern optical communications. However, current devices suffer from limited operation speeds and low conversion efficiencies due to the intrinsically low nonlinear index of silicon. In this paper, we experimentally demonstrate enhanced optical nonlinearity in a silicon–organic hybrid slot waveguide consisting of an ultranarrow slot waveguide coated with a highly nonlinear organic material. The fabricated slot area is as narrow as 45 nm, which is, to the best of our knowledge, the narrowest slot width that has been experimentally reported in silicon slot waveguides. The nonlinear coefficient of the proposed device with a length of 3 mm is measured to be up to 1.43×106 W−1 km−1. Based on the nanostructure design, the conversion efficiencies of degenerate four-wave mixing showed enhancements of more than 12 dB and 5 dB compared to those measured for an identical device without the organic material and a silicon strip waveguide, respectively. As a proof of concept, all-optical canonical logic units based on the prepared device with two inputs at 40 Gb/s are analyzed. The obtained logic results showed clear temporal waveforms and wide-open eye diagrams with error-free performance, illustrating that our device has great potential for use in high-speed all-optical signal processing and high-performance computing in the nodes and terminals of optical networks.
研究领域:
光学
·
材料科学
·
通信工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Kai Zhao,Yunpeng Wang,Jingyu Guo,Shufen Zhang,Wenbin Niu
Flexible and stretchable electronics with mechanosensory functionality are highly desirable on account of their intriguing applications in smart wearable devices. Unfortunately, the susceptibility to structural damage and single electrical signal output restrict their further practical uses. Here, novel photonic vitrimer-based electronics (PVBEs) with self-healability and ultrastable visual-digital outputs are developed by harnessing vitrimer-induced structural evolutions of both photonic crystal (PC) and piezoresistive carbon textile. They demonstrate excellent strain sensing performances including synchronous electrical/optical response (0.25 s), high sensitivity (gauge factor, GF = 10.3), superior durability (>10000 cycles) and mechanochromism. Notably, dynamic covalent networks within vitrimer endow them self-healing ability of optical function, while the electromechanical performances are stably maintained benefiting from unique fully-embedded structure. Based on these merits, a new type of PVBE is demonstrated by incorporating wireless transmission system. Such a device can function as wirelessly visualized sensor for real-time tracking both large and subtle human movements with optical and electrical dual-signal feedbacks, realizing remote and precise visual-digital outputs. This work offers a versatile platform for emerging self-healing functional devices and visually interactive electronics, bringing huge developments in the era of the Internet of Things.
研究领域:
材料科学
·
电子工程
·
智能设备
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2017
·Vol. 5
·期 24
·1700884
·
IF 6.875
Chenyang Xing,Zhongjian Xie,Zhiming Liang,Weiyuan Liang,Taojian Fan,Joice Sophia Ponraj,Sathish Chander Dhanabalan,Dianyuan Fan,Han Zhang
Investigations into 2D nanomaterials are of considerable significance from both an academic and industrial point of view. The present work addresses, for the first time, the fabrication of 2D nonlayered ultrathin selenium through a facile liquid-phase exfoliation method. The results reveal that the as-prepared 2D Se nanosheets are 40–120 nm in lateral dimension and 3–6 nm in thickness. The nanosheets exhibit a trigonal crystalline phase similar to their bulk counterpart, indicating the conservation of the crystalline features during the exfoliation procedure. The successful preparation of 2D Se nanosheets from nonlayered bulk Se can be ascribed to two kinds of anisotropy: (1) that of crystalline bulk Se with chain-like structures, where strong intrachain Se Se covalent bonds coexist with weak interchain van der Waals forces, and (2) that of probe sonication in the vertical direction. The results also show that the 2D Se nanosheets possess a size-dependent band gap ( E g ), strong photoluminescence effect and robust, chemical stability under ambient conditions. Furthermore, a 2D Se-nanosheet-based optical modulation device is demonstrated that allows for excellent ultrashort pulse generation of an optical communication band. It is therefore anticipated that 2D Se nanosheets may find significant applications in both photoluminescence and ultrafast photonics.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Optical Materials Express
·
2020
·Vol. 10
·期 10
·2480-2490
·
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
·
材料科学
·
激光技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 31
·2403865
·
IF 27.4
Jingjing Liang,Shurun Chen,Erli Ni,Jiao Tang,Guanghui Cao,Huiliu Wang,Zhongyang Li,Mengqi Zeng,Lei Fu
High-entropy alloy (HEA) nanostructures arranged into well-defined configurations hold great potential for accelerating the development of electronics, photonics, catalysis, and device integration. However, the random nucleation induced by the disparity in physicochemical properties of multiple elements makes it challenging to achieve single-particle synthesis at the patterned preset sites in the high-entropy scenario. Herein, the liquid metal nanoreactor strategy is proposed to realize the construction of HEA arrays. The coalescence of the liquid metal driven by the tendency to decrease surface energy provides a restricted environment for the nucleation and growth to form single HEA particles at the preset locations, which can be regarded as a self-confinement reaction. Liquid metal endowing a low diffusion energy barrier on the substrate and a high diffusivity of the alloy system can dynamically promote the aggregation process. As a result, the HEA array is prepared with elements up to eleven and possesses uniform periodicity, which exhibits excellent holography response in a broad spectrum. This work injects new vitality into the construction of HEA nanopatterns and provides an excellent platform for propelling their fundamental research and applications.
研究领域:
材料科学
·
纳米技术
·
光子学
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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
·
凝聚态物理
·
纳米材料科学
·
非线性光学
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激光技术
·
二维材料
·
光电功能材料
✓ 已验证
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Yongping Dai,Qiang Yu,Xiaoxin Yang,Kun Guo,Yan Zhang,Yushuang Zhang,Junrong Zhang,Jie Li,Jie Chen,Haiqin Deng,Tianhao Xian,Xiao Wang,Jian Wu,Kai Zhang
Ultrafast photonics has become an interdisciplinary topic of great consequence due to the spectacular progress of compact and efficient ultrafast pulse generation. Wide spectrum bandwidth is the key element for ultrafast pulse generation due to the Fourier transform limitation. Herein, monoclinic Nb2GeTe4, an emerging class of ternary narrow-gap semiconductors, was used as a real saturable absorber (SA), which manifests superior wide-range optical absorption. The crystallization form and growth mechanism of Nb2GeTe4 were revealed by a thermodynamic phase diagram. Furthermore, the Nb2GeTe4–SA showed reliable saturation intensity and larger modulation depth, ascribed to a built-in electric field driven by the asymmetric crystal architecture confirmed via X-ray diffraction, polarized Raman spectra, and scanning transmission electron microscopy. Based on the Nb2GeTe4–SA, femtosecond mode-locked operation with good overall performance was achieved by a properly designed ring cavity. These results suggest that Nb2GeTe4 shows great promise for ultrafast photonic applications and arouse interests in exploring the intriguing properties of the ternary van der Waals material family.
研究领域:
材料科学
·
光学工程
·
物理学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Yingjie Zhao,Gongxun Bai,Youqiang Huang,Yuan Liu,Dengfeng Peng,Liang Chen,Shiqing Xu
Multifunctional optical sensing devices are of decisive significance to the miniaturization and integration of optoelectronic devices. However, the development of stimuli responsive materials with multimode emission is still in the early stage, limiting the application of integrated optical sensing. Here, we report the multimode emission piezophotonic material fabricated by doping lanthanide ions into the quaternary piezoelectric semiconductor SrZnOS, achieving multimode emission under various stimulus/excitation sources (ultraviolet, near-infrared laser, X-ray, and force), due to its multifunctional optical properties . Particularly the mechanoluminescence has been realized covering both the visible and near-infrared spectral bands . Optical stress sensing was achieved by establishing a quantitative relationship between force and light conversion. Moreover, near-infrared mechanoluminescence can effectively resist the interference of ambient light. The temperature detection performance and the power-dependent color tunability of the sample were also evaluated for multifunctional applications. All the results indicate that the developed multifunctional optical materials with inherent multimode light-emitting characteristics have the potential in advanced optical sensing and anti-counterfeiting applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 3
·602
·
IF 5.3
Yan Lu,Zheng Zhou,Xuefen Kan,Zixin Yang,Haiqin Deng,Bin Liu,Tongtong Wang,Fangqi Liu,Xueyu Liu,Sicong Zhu,Qiang Yu,Jian Wu
The magnetic nanomaterial Mn3Si2Te6is a promising option for spin-dependent electronic and magneto-optoelectronic devices. However, its application in nonlinear optics remains fanciful. Here, we demonstrate a pulsed Er-doped fiber laser (EDFL) based on a novel quasi-2D Mn3Si2Te6saturable absorber (SA) with low pump power at 1.5 μm. The high-quality Mn3Si2Te6crystals were synthesized by the self-flux method, and the ultrathin Mn3Si2Te6nanoflakes were prepared by a simple mechanical exfoliation procedure. To the best of our knowledge, this is the first time laser pulses have been generated using quasi-2D Mn3Si2Te6. A stable pulsed laser at 1562 nm with a low threshold pump power of 60 mW was produced by integrating the Mn3Si2Te6SA into an EDFL cavity. The maximum power of the output pulse is 783 μW. The repetition rate can vary from 24.16 to 44.44 kHz, with corresponding pulse durations of 5.64 to 3.41 µs. Our results indicate that the quasi-2D Mn3Si2Te6is a promising material for application in ultrafast photonics.
研究领域:
材料科学
·
光学工程
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 12
·2107437
·
IF 15.153
Yuantian Zheng,Xu Li,Ronghua Ma,Zefeng Huang,Chunfeng Wang,Mingju Zhu,Yangyang Du,Xian Chen,Caofeng Pan,Bohan Wang,Yu Wang,Dengfeng Peng
CaZnOS-based semiconductors are the only series of material system discovered that can simultaneously realize a large number of dopant elements to directly fulfill the highly efficient full-spectrum functionality from ultraviolet to near-infrared under the same force/pressure. Nevertheless, owing to the high agglomeration of the high temperature solid phase manufacturing process, which is unable to control the crystal morphology, the application progress is limited. Here, the authors report first that CaZnOS-based fine monodisperse semiconductor crystals with various doping ions are successfully synthesized by a molten salt shielded method in an air environment. This method does not require inert gas ventilation, and therefore can greatly reduce the synthesis cost and more importantly improve the fine control of the crystal morphology, along with the crystals’ dispersibility and stability. These doped semiconductors can not only realize different colors of mechanical-to-optical energy conversion, but also can achieve multicolor luminescence under low-dose X-ray irradiation, moreover their intensities are comparable to the commercial NaI:Tl. They can pave the way to the new fields of advanced optoelectronic applications, such as piezophotonic systems, mechanical energy conversion and harvesting devices, intelligent sensors, and artificial skin as well as X-ray applications.
研究领域:
材料科学
·
光电技术
·
半导体物理
✓ 已验证
DOI
高影响因子
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