Highly Efficient Dual Band Graphene Plasmonic Photodetector at Optical Communication Wavelengths

Yousefi, Somayeh; Pourmahyabadi, Maryam; Rostami, Ali

doi:10.1109/tnano.2021.3066452

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…This distinctive property makes the development of plasmonic devices rapid remarkably. Numerous innovations, such as surface‐enhanced Raman scattering (SERS), [ 1–3 ] SP resonance (SPR) biosensors, [ 4,5 ] high‐bandwidth plasmonic photodetectors, [ 6,7 ] and plasmonic nanolasers, [ 8–10 ] have been proposed. In the development of plasmonic devices, as the structural size shrinks and the plasmonic effect increases, competition between the enhancement of light‐matter interaction and increased internal loss inevitably arises and must be prioritized in the design process, as it strongly affects lasing performance.…”

Section: Introductionmentioning

confidence: 99%

Scaling Laws for Perovskite Nanolasers With Photonic and Hybrid Plasmonic Modes

Huang

Chen

et al. 2022

Advanced Optical Materials

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and plasmonic nanolasers, [8][9][10] have been proposed. In the development of plasmonic devices, as the structural size shrinks and the plasmonic effect increases, competition between the enhancement of light-matter interaction and increased internal loss inevitably arises and must be prioritized in the design process, as it strongly affects lasing performance. Therefore, a scaling law for plasmonic cavities is urgently needed and must be integrated into the development of any type of plasmonic nanolaser. In 2017, Wang et al. demonstrated an unusual scaling law for nanosquare plasmonic nanolasers. [11] The lasing mechanism is affected by whispering gallery mode (WGM) resonance, and a scaling law that accounts for WGM resonance can be determined from two geometric parameters: the width and thickness of the CdSe nanosquare. When these two parameters approach the optical diffraction limit, the observed difference in the lasing threshold or power consumption between plasmonic and photonic lasers dramatically increases. Plasmonic lasers generally exhibit a lower lasing threshold than photonic lasers, which implies that plasmonenhanced light-matter interaction dominates the entire laser operation. Consequently, a suitable size for plasmonic lasers can be obtained.Because the scale of plasmonic devices is equal to or below the optical diffraction limit, determining the lasing mode and observing the near-field is difficult, which may lead to inaccurate estimations in the optical design process and calculation of the scaling law. A rigorous method for identifying the plasmonic or photonic mode resonating in the cavity is thus crucial. In 2014, Sun et al. used a modified Young's inter ference method to determine the order of photonic Fabry−Pérot modes in a wire structure. [12] The angle-resolved photoluminescence (ARPL) signals of a CdS-nanostructure laser reveal a clear relation between mode parity and lasing peaks. According to the phase correlation of various longitudinal modes, the operation mode in the laser cavity can be identified. Moreover, some studies used the ARPL spectra to resolve the near-field oscillation and distinguish the photonic Fabry−Pérot mode and WGM mode in the perovskite microplate. [13] The direction of inter ference fringes shown in the ARPL spectra is related to the oscillation direction of the lasing mode, which is beneficial to identify different longitudinal modes in the laser cavity. Additionally, the far-field polarization can be further applied to Surface plasmons exhibit an extraordinary capability to reduce the structural size and improve light−matter interaction. However, for small-sized plasmonic cavities, the optical diffraction limit makes the near-field difficult to observe, complicating the analysis of exact lasing characteristics. In this study, a 4f measurement system is used to extract the mode parity from the interference pattern and reconstruct the near-field of the hybrid plasmonic perovskite nanolasers. In conjunction with other measurements, a series of rigorous methods fo...

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Section: Introductionmentioning

confidence: 99%

Scaling Laws for Perovskite Nanolasers With Photonic and Hybrid Plasmonic Modes

Huang

Chen

et al. 2022

Advanced Optical Materials

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“…Similar to flat graphene, the actively tunable Fermi level of folded graphene could be achieved by applying electrostatic gating [77,82]. Considering the capacitor model for the changes of Fermi level [83][84][85], some experimental techniques may be employed, e.g., using an ion-gel gate diectric [86] or a A planar microribbon is divided into two segments with width l 1 and l , 2 respectively, and an angle q between them. The plane wave is normally incident from y axis, with electric field along the width of FGMRs.…”

Section: Resultsmentioning

confidence: 99%

High-efficiency light manipulation using a single layer of folded graphene microribbons

Xue,

Wang

2024

Phys. Scr.

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Since its one-atom thickness, it remains an open question to enhance light matter interactions in graphene, which is usually implemented through external resonant structures such asFabry-Perot cavity. Here, we propose an alternative scheme to enhance light matter interactions in a single layer of folded graphene microribbons (FGMRs), and remarkably, for normal incidences rather than oblique incidences in most studies. By optimizing structural parameters (e.g., the location of folding axis and folding angle), three light manipulations such as perfect absorption, perfect reflection, and perfect transmission can be achieved independently. More interestingly, any one of the three functionalities can be actively switched to the other via changing material parameters (Fermi level and carrier mobility ), which is actually the most attractive feature of graphene plasmonics. Finally, we showFGMRs can also support triple functionalities, i.e., via changing material parameters, one of the three functionalities can be switched to the second one and then the third one. Our results will be of great interest to fundamental physics and pave the way for graphene plasmonic device applications.

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“…162 High responsivity implies that the device can produce a large electrical signal output under the same incident optical power. Typically, the responsivity of PDs is correlated with the wavelength 163 and optical power. 164 Meanwhile, the absorption coefficient, 165 contact resistance, 166 photonic structure, 167 and channel width 168 also impact the carrier collection efficiency, thereby altering the responsivity.…”

Section: Principlesmentioning

confidence: 99%