Few‐Layer Topological Insulator for All‐Optical Signal Processing Using the Nonlinear Kerr Effect

Chen, Shuqing; Miao, Lili; Chen, Xing; Chumakov, Yu. M.; Zhao, Chujun; Datta, Saiti; Liu, Ying; Bao, Qiaoliang; Zhang, Han; Liu, Yong; Wen, Shuangchun; Fan, Dianyuan

doi:10.1002/adom.201500347

Cited by 91 publications

(53 citation statements)

References 60 publications

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“…Thus, the lattice mismatch between Bi 2 Te 3 and graphene is 2.7% (0.12 Å), which is ideal for van der Waals epitaxial growth [ Fig. 1(b)] [14][15][16][17]. This work utilizes the chemical vapor deposition (CVD) method to fabricate the graphene-Bi 2 Te 3 plasmonic heterostructure.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient plasmon excitation in graphene-Bi_2Te_3 heterostructure

Song

Yuan

et al. 2016

J. Opt. Soc. Am. B

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Graphene plasmons have attracted a lot of attention due to large confinement and small mode volume. However, the graphene-based plasmonic devices are still limited in the practical applications due to relatively small light absorption of graphene and limited light-matter coupling efficiency in general excitation strategy. Here, this work reported a strong plasmonic coupling effect observed in a novel graphene-Bi 2 Te 3 heterostructure on the top of silicon gratings. It is interesting to find that the extinction spectra of the graphene-Bi 2 Te 3 heterostructure has shown three times greater magnitude than that of graphene. This observation is mainly attributed to two factors: first, the coupling efficiency between the graphene and Bi 2 Te 3 second, the higher light absorption in the graphene-Bi 2 Te 3 heterostructure. Moreover, the plasmonic resonance peak of the graphene-Bi 2 Te 3 heterostructure can be easily tuned by changing the grating period just like what happens in the graphene film. In all, this work utilizes the simple silicon grating to couple the light into the graphene-Bi 2 Te 3 heterostructure, and further explores the hybridized Dirac plasmons in the graphene-Bi 2 Te 3 heterostructure. We believe it will stimulate the interest to study the variant plasmonic heterostructure and trigger new terahertz device applications. Graphene plasmons have attracted a lot of attention due to large confinement and small mode volume. However, the graphene-based plasmonic devices are still limited in the practical applications due to relatively small light absorption of graphene and limited light-matter coupling efficiency in general excitation strategy. Here, this work reported a strong plasmonic coupling effect observed in a novel graphene-Bi 2 Te 3 heterostructure on the top of silicon gratings. It is interesting to find that the extinction spectra of the graphene-Bi 2 Te 3 heterostructure has shown three times greater magnitude than that of graphene. This observation is mainly attributed to two factors: first, the coupling efficiency between the graphene and Bi 2 Te 3 ; second, the higher light absorption in the graphene-Bi 2 Te 3 heterostructure. Moreover, the plasmonic resonance peak of the graphene-Bi 2 Te 3 heterostructure can be easily tuned by changing the grating period just like what happens in the graphene film. In all, this work utilizes the simple silicon grating to couple the light into the graphene-Bi 2 Te 3 heterostructure, and further explores the hybridized Dirac plasmons in the graphene-Bi 2 Te 3 heterostructure. We believe it will stimulate the interest to study the variant plasmonic heterostructure and trigger new terahertz device applications.

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Section: Resultsmentioning

confidence: 99%

Highly efficient plasmon excitation in graphene-Bi_2Te_3 heterostructure

Song

Yuan

et al. 2016

J. Opt. Soc. Am. B

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“…From the realistic perspective, pulses emitted from laser sources are often chirped [33]. Therefore, apart from the self-steepening effect of dispersive waves emission discussed above, good understanding of the frequency chirp influence on dispersive waves emission is of great importance.…”

Section: Manipulating the Dispersive Wave Generation By Frequency Chirpmentioning

confidence: 99%

Dynamics of Dispersive Wave Generation in Gas-Filled Photonic Crystal Fiber with the Normal Dispersion

Deng

Zhang

2017

Advances in Condensed Matter Physics

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The absence of Raman and unique pressure-tunable dispersion is the characteristic feature of gas-filled photonic crystal fiber (PCF), and its zero dispersion points can be extended to the near-infrared by increasing gas pressure. The generation of dispersive wave (DW) in the normal group velocity dispersion (GVD) region of PCF is investigated. It is demonstrated that considering the selfsteepening (SS) and introducing the chirp of the initial input pulse are two suitable means to control the DW generation. The SS enhances the relative average intensity of blue-shift DW while weakening that of red-shift DW. The required propagation distance of DW emission is markedly varied by introducing the frequency chirp. Manipulating DW generation in gas-filled PCF by the combined effects of either SS or chirp and three-order dispersion (TOD) provides a method for a concentrated transfer of energy into the targeted wavelengths.

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“…The spectral response range of CNTs sensitively depends on their diameter and chirality, restricting their practical applications in specific wavelength or broadband tenability [13]. And, graphene has relatively weak optical absorption (∼2.3%/layer [20]) due to its gapless band structure, which limits its application in fiber laser. Another 2D material, transition metal dichalcogenides (TMDs) (MoS 2 [21], WS 2 [22], MoSe 2 [23,24], etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Among them, passive Q-switching technology based on saturable absorber (SA) has made remarkable progress in view of compact, low cost, flexible, and so on. Since the Nd:glass (the first generation of SA) was successfully used for pulse generation in 1966 [7], a wide variety of SAs have been intensively developed, such as Semiconductor Saturable Absorption Mirrors (SESAMs) [8,9], Carbon Nanotubes (CNTs) [10][11][12][13], graphene [14][15][16][17][18], Topological Insulator (TI) [19,20], and Transition Metal Dichalcogenides (TMDs) [21][22][23][24]. The SESAMs are utilized in most of commercially available laser systems for high flexibility and stability.…”

Section: Introductionmentioning

confidence: 99%

Submicrosecond Q-Switching Er-Doped All-Fiber Ring Laser Based on Black Phosphorus

Cai

Zhang

et al. 2017

Advances in Condensed Matter Physics

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Black phosphorus (BP), a new two-dimensional (2D) material, has been deeply developed for extensive applications in electronics and optoelectronics due to its similar physical structure to graphene and thickness dependent direct band gap. Here, we demonstrated a submicrosecond passive Q-switching Er-doped fiber laser with BP as saturable absorber (SA). The BP saturable absorber was fabricated by mechanical exfoliation method. By taking full advantage of the ultrafast relaxation time of BP-SA and careful design of compact ring cavity, we obtained stable Q-switching pulses output with a shortest duration as narrow as 742 ns. With increasing the pump power, the pulse repetition rate accreted gradually almost linearly from 9.78 to 61.25 kHz, and the pulse duration declined rapidly at lower pump power regime and retained approximate stationary at higher pump power regime from 3.05 to 0.742 s. The experimental results indicate that BP-SA can be an effective SA for nanosecond Q-switching pulse generation.

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Few‐Layer Topological Insulator for All‐Optical Signal Processing Using the Nonlinear Kerr Effect

Cited by 91 publications

References 60 publications

Highly efficient plasmon excitation in graphene-Bi_2Te_3 heterostructure

Highly efficient plasmon excitation in graphene-Bi_2Te_3 heterostructure

Dynamics of Dispersive Wave Generation in Gas-Filled Photonic Crystal Fiber with the Normal Dispersion

Submicrosecond Q-Switching Er-Doped All-Fiber Ring Laser Based on Black Phosphorus

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