Application of transition metal dichalcogenides in mid‐infrared fiber laser

Liu, Mengli; Chen, Li; Liu, Ximei; Wang, Yaorong; Wei, Zhongming

doi:10.1002/nano.202000047

Cited by 17 publications

(12 citation statements)

References 75 publications

(52 reference statements)

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“…In fact, the fundamental cause of modulator operation depends on the nonlinear optical properties of the material which originates from the non-resonant motion of bound electrons under the applied electric field 815 . Thus, the formulas for simulating the linear and nonlinear responses under the applied electric field, E, can be expressed as: (1) (2)…”

Section: Optical Modulator and Lasersmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

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309

119

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Research on two-dimensional (2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications.In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief background 物理化学学报 Acta Phys. -Chim. Sin. 2021, 37 (12), 2108017 (3 of 151) introduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials (PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.

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Section: Optical Modulator and Lasersmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

Self Cite

309

119

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show abstract

“…However, the current gradually becomes weaker than that expected from the linear response. We consider that this nonlinear effect suppressing the current comes from the saturable absorption that often appears in various 2D materials [42][43][44] . The saturable absorption takes place by two mechanisms: a decrease of electrons in the valence band by the excitation, and an increase of electrons in the conduction band that block the excitation from the valence band.…”

Section: Resultsmentioning

confidence: 99%

Nonlinear dynamics of electromagnetic field and valley polarization in WSe$_{2}$ monolayer

Hashmi,

Yamada,

Yamada

et al. 2021

Preprint

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Linear and nonlinear optical response of WSe 2 monolayer is investigated by two-dimensional Maxwell plus time-dependent density functional theory with spin-orbit interaction. By applying the chiral resonant pulses, the electron dynamics along with high harmonic generation are examined at weak and strong laser fields. WSe 2 monolayer shows the linear optical response at the intensity I = 10 10 W/cm 2 while a complex nonlinear behavior is observed at I = 10 12 W/cm 2 . The nonlinear response of WSe 2 monolayer in terms of saturable absorption is observed at strong laser field. By changing the chirality of the resonant light, a strong circular dichroic effect is observed in the excited state population. A relatively weak laser field shows effective valley polarization while strong field induces spin-polarized carrier peak between K(K ) and Γ -point via nonlinear process. On the other hand, the strong laser field shows high harmonics up to the 11th order. Our results demonstrate that circularly polarized resonant pulse generate high harmonics in WSe 2 monolayer of order 3n±1.

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“…[ 6 ] Apart from reducing contact resistance, the metallic or semimetallic phases of TMDs have vanishing or small bandgaps, which are suitable for the photodetection in the near‐infrared region. [ 39,99 ] However, due to the metastable nature of most metallic and semimetallic phases, it has been difficult to obtain these phases with high quality for making devices. CVD‐based phase engineering can therefore provide a possible solution.…”

Section: Applications Of Phase‐engineered 2d Tmds Prepared By Cvdmentioning

confidence: 99%

Chemical Vapor Deposition Mediated Phase Engineering for 2D Transition Metal Dichalcogenides: Strategies and Applications

et al. 2021

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2D transition metal dichalcogenides (TMDs) are characterized by the presence of multiple crystal structures or phases, even at the ultrathin limit. Controlling phase transformations, namely, phase engineering, of 2D TMDs is crucial for realizing high‐performance 2D devices by combining phases with distinct physical and chemical properties. As a powerful approach for large‐scale production of high‐quality 2D TMDs, chemical vapor deposition (CVD) offers unique advantages in phase engineering due to its highly controllable synthesis processes. Starting with an introduction of the crystal structures and phase transformations of 2D TMDs, this review summarizes the recent developments in CVD‐mediated phase engineering strategies of TMDs, including control of temperature, precursors, catalysis, atmosphere, composition, and strain during the deposition process. Moreover, the representative applications of CVD‐based phase‐engineered TMDs in the field of transistors, photodetectors, photovoltaic cells, and catalysis are overviewed. Finally, the challenges, expectations of CVD‐based phase engineering, and future development of this versatile technique are discussed.

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Application of transition metal dichalcogenides in mid‐infrared fiber laser

Cited by 17 publications

References 75 publications

Recent Progress on Two-Dimensional Materials

Recent Progress on Two-Dimensional Materials

Nonlinear dynamics of electromagnetic field and valley polarization in WSe$_{2}$ monolayer

Chemical Vapor Deposition Mediated Phase Engineering for 2D Transition Metal Dichalcogenides: Strategies and Applications

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