Broadband polarization-insensitive saturable absorption of Fe<sub>2</sub>O<sub>3</sub> nanoparticles

Mao, Dong; Cui, Xiaoqi; He, Zhiwen; Lü, Hua; Zhang, Wending; Wang, Lei; Zhuang, Qiang; Hua, Shijia; Mei, Ting; Zhao, Jianlin

doi:10.1039/c8nr07551d

Cited by 55 publications

(24 citation statements)

References 46 publications

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“…Figure S7 shows the Raman spectra of Fe 2 O 3 @MoS 2 /C. Three peaks located at 216.3, 281.8, and 598.2 cm –1 are observed, which are assigned to the A 1g , E g , and E g modes of α-Fe 2 O 3 , respectively. , Furthermore, the first-order Raman modes (A 1g ) and second-order Raman scattering (2LA(M)) of MoS 2 , which are located at 393.1 and 478.0 cm –1 , respectively, are also observed. On the other hand, two broad characteristic peaks at around 1300 and 1560 cm –1 are observed, which can be ascribed to the D and G bands of carbon, respectively. ,, The contents of Fe 2 O 3 , MoS 2 , and C in the Fe 2 O 3 @MoS 2 /C composite were determined by thermogravimetric analysis (TGA) and inductively coupled plasma (ICP) spectroscopy.…”

Section: Resultsmentioning

confidence: 97%

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Cui

Tan

Liu

et al. 2021

ACS Appl. Energy Mater.

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Constructing multicomponent hybrid materials is a common and effective method to achieve high-performance anode materials for sodium ion batteries (SIBs). In this work, hierarchical nanorods composed of ultrathin MoS2/C nanosheets and hollow Fe2O3 nanorods as SIB anode materials are designed and reported. Through a simple and two-step hydrothermal method, ultrathin MoS2/C nanosheets are grown on hollow Fe2O3 nanorods to realize the Fe2O3@MoS2/C configuration. Benefiting from the synergic effects of Fe2O3 nanorods and ultrathin MoS2/C nanosheets, which can shorten the diffusion path of electrons/Na+ ions and enhance the electrical conductivity of the hybrids, the volume change of the electrode is avoided during the sodiation/desodiation process. Furthermore, MoS2/C nanosheets can offer more Na+ storage active sites, which lead to high sodium storage capacity. Accordingly, when the Fe2O3@MoS2/C composite is assessed as an SIB anode material, it delivers an excellent electrochemical performance, including ultrastable cyclability (379.2 mAh g–1 is maintained after 2000 cycles) and excellent rate capability (339.0 mAh g–1 at 5.0 A g–1).

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Section: Resultsmentioning

confidence: 97%

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Cui

Tan

Liu

et al. 2021

ACS Appl. Energy Mater.

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“…Such process yields spherical particles in size of 12-20 nm, which were then used with polyvinyl alcohol (PVA) composites in Q-switched fiber laser at 1-, 1.55-, and 2-μm wavelengths. [110] A thermal decomposition method was also proposed for the synthesis of FONPs for application as SAs. Here, FeCl 3 is dissolved along with sodium oleate in a solvent mixture made of water, ethanol, and hexane to obtain an iron-oleate complex after heating at 70 °C for 4 h. Such complex and oleic acid are dissolved in 1-octadecene and heated under stirring up to 320 °C for 1 h under nitrogen flow.…”

Section: Chemical Methodsmentioning

confidence: 99%

“…Q-switched cylindrical vector beams with spatialstructured polarization state were also obtained by inserting the SA in two-mode Er-doped fiber laser, which can be attributed to the insensitive polarization state of Fe 2 O 3 . [110] While many groups have used FONPs SA to implement Q-switched operation, only a few papers reported the mode-locked laser with FONPs as SA. [209] Therefore, in 2019, Li et al exploited FONPs as SA to achieve mode-locked operation at 1558 nm, confirming the feasibility of FONPs as mode locker.…”

Section: (13 Of 24)mentioning

confidence: 99%

Recent Progress on Metal‐Based Nanomaterials: Fabrications, Optical Properties, and Applications in Ultrafast Photonics

Sun

Cheng

et al. 2021

Adv Funct Materials

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Nanomaterials have demonstrated excellent mechanical, thermal, optical, and electrical properties in various fields, including 1D carbon nanotubes, as well as 2D materials starting from graphene. Metal-based nanomaterials, mainly divided into metal and metal oxide nanoparticles, also gradually come into the sight of ultrafast photonics applications due to the outstanding optical properties. The optical properties of metal nanoparticles can be enhanced by the interaction between conduction electrons with electric fields that is called surface plasmon resonance. As for metal oxide nanoparticles, optical properties are closely related to bandgap structures. When it comes to transition metal oxides, other phenomena also play important roles in optical absorption such as spin inversion and excitons of iron. Moreover, preparation methods of materials are also crucial for their properties and further applications. Therefore, in this review, commonly used physical and chemical fabrication methods for metal-based nanomaterials are first introduced. Then the optical properties of typical metal and metal oxide nanoparticles are discussed specifically. In addition, the applications of metal-based nanomaterials in ultrafast lasers based on mode-locked and Q-switched techniques are also summarized. Finally, a summary and outlook toward the synthesis, optical properties, and applications in ultrafast photonics of metal-based nanomaterials are presented.

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“…On the other hand, Q-switched fiber lasers have found wide applications in industry, military, communications and medicine in recent decades. Generally, the passive Q-switching laser pulse feature depends on the SA quality [19,20,21]. In the last few years, the 2D nanomaterials mentioned above have been widely used as SAs in pulsed lasers, which possess the advantages of wideband nonlinear optical response, high third-order nonlinear susceptibility, high carrier mobility and powerful interaction between light and materials [22,23,24].…”

Section: Introductionmentioning

confidence: 99%

Optical Nonlinearity of ZrS2 and Applications in Fiber Laser

Wang

et al. 2019

Nanomaterials

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Group VIB transition metal dichalcogenides (TMDs) have been successfully demonstrated as saturable absorbers (SAs) for pulsed fiber lasers. For the group comprising IVB TMDs, applications in this field remain unexplored. In this work, ZrS2-based SA is prepared by depositing a ZrS2 nanostructured film onto the side surface of a D-shaped fiber. The nonlinear optical properties of the prepared SA are investigated, which had a modulation depth of 3.3% and a saturable intensity of 13.26 MW/cm2. In a pump power range of 144–479 mW, the Er-doped fiber (EDF) laser with ZrS2 can operate in the dual-wavelength Q-switching state. The pulse duration declined from 10.0 μs down to 2.3 μs. The single pulse energy reached 53.0 nJ. The usage of ZrS2 as a SA for pulse generation in fiber lasers is presented for the first time. Compared to the experimental results of dual-wavelength Q-switched fiber lasers with two-dimensional (2D) materials, our laser performance was better. Our work indicates that the group comprising IVB TMD ZrS2 has bright prospects for nonlinear optical applications.

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Broadband polarization-insensitive saturable absorption of Fe₂O₃ nanoparticles

Abstract: The broadband polarization-insensitive saturable absorption of Fe2O3 nanoparticles has been demonstrated for generating Q-switched cylindrical vector beams.

Cited by 55 publications

References 46 publications

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Recent Progress on Metal‐Based Nanomaterials: Fabrications, Optical Properties, and Applications in Ultrafast Photonics

Optical Nonlinearity of ZrS2 and Applications in Fiber Laser

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Broadband polarization-insensitive saturable absorption of Fe2O3 nanoparticles

Abstract: The broadband polarization-insensitive saturable absorption of Fe2O3 nanoparticles has been demonstrated for generating Q-switched cylindrical vector beams.

Cited by 55 publications

References 46 publications

Hierarchical Fe2O3@MoS2/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Hierarchical Fe2O3@MoS2/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Recent Progress on Metal‐Based Nanomaterials: Fabrications, Optical Properties, and Applications in Ultrafast Photonics

Optical Nonlinearity of ZrS2 and Applications in Fiber Laser

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Product

Resources

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Broadband polarization-insensitive saturable absorption of Fe₂O₃ nanoparticles

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability

Hierarchical Fe₂O₃@MoS₂/C Nanorods as Anode Materials for Sodium Ion Batteries with High Cycle Stability