Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks

Saadabad, Reza Masoudian; Pauly, Christian; Herschbach, N.; Neshev, Dragomir N.; Hattori, Haroldo T.; Miroshnichenko, Andrey E.

doi:10.3390/nano11020428

Cited by 13 publications

(2 citation statements)

References 44 publications

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“…Detectors and sensors operating in the medium and long infrared bands are widely utilized in photoelectric detection systems [27][28][29]. Specifically, medium infrared detectors and sensors typically operate in the 3.7-4.8 µm range [30,31], while long infrared devices operate in the 8-12 µm range [32,33].…”

Section: Resultsmentioning

confidence: 99%

Study on the Filter Integrated with High Transmission and Ultra-Wideband Electromagnetic Shielding Function in the View of Surface Plasmon

Wen,

Huang,

Tang

et al. 2023

Applied Sciences

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The generation of a strong electromagnetic weapon requires the electromagnetic protection performance of the photoelectric system, including the high shielding and ultra-wideband protection characteristics against strong electromagnetic attacks and superhigh infrared transmittance. This article aims to excite surface plasmons by etching a subwavelength circular structure array run through a metal film. At the same time, the local field enhancement effect based on surface plasmons is used to tune specific wavelengths of light, achieving the goal of enhancing the optical transmission effect. Ulteriorly, the amplitude and position of the infrared response peak are controlled by optimizing the structural geometric parameters to achieve filtering effects in different wavebands. Furthermore, through the inversion calculation of the transmission spectrum of the circle array structure in the visible light band, the different colors of its surface under different parameters can correspond one-to-one to its performance, so as to intuitively identify different filter types and their performance. Meanwhile, the remaining metal film after etching off the circle array structure region constitutes an ultra-wideband shielding layer as a continuous conductor, achieving a shielding efficiency of more than 45 dB in the radar band (1–18 GHz). It is worth noting that the cascaded theory combines ultra-thin metal films with thick substrates to solve the problem of software running for long periods of time and under high loads during the simulation of light propagation. This scheme greatly reduces the error between simulation and practical application.

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Section: Resultsmentioning

confidence: 99%

Study on the Filter Integrated with High Transmission and Ultra-Wideband Electromagnetic Shielding Function in the View of Surface Plasmon

Wen,

Huang,

Tang

et al. 2023

Applied Sciences

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show abstract

“…In the optical frequency, electromagnetic resonances can increase the photon lifetime and enhance the interaction between light and matter in the local fields. Such characteristics of the electromagnetic resonances have been employed in lasers [29,30], nonlinear-optical enhancement [31][32][33], perfect absorbers [34][35][36][37][38], and photodetectors [39][40][41][42][43][44]. Here, subwavelength periodic hole arrays are used to increase the light absorption of the APD by exciting optical-resonance modes.…”

Section: Design Of Light-absorption Enhancementmentioning

confidence: 99%

High-Performance Normal-Incidence Ge/Si Meta-Structure Avalanche Photodetector

et al. 2023

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A high-speed and high-sensitivity avalanche photodetector (APD) is a critical component of a high-data-rate and low-power optical-communication link. In this paper, we study a high-speed and high-efficiency Ge/Si heterostructure APD. First, we numerically study the speed performance of the APD by analyzing frequency response. An optimized epitaxial structure of the high-speed APD is designed. In the absence of RC time effects, the APD exhibits a fast pulse response (full-width at half-maximum) of 10 ps and a high 3 dB bandwidth of 33 GHz at a high-gain value of 10. Taking device size and the corresponding RC time effects into account, the APD still achieves a high 3 dB bandwidth of 29 GHz at a gain value of 10. Moreover, a novel subwavelength periodic hole array is designed on the normal-incidence APD for enhancing light absorption without sacrificing speed performance. Near-perfect absorption is almost achieved by an infinite-period hole array due to the coupling of dual-resonance modes. A high-absorption efficiency of 64% is obtained by a limited-sized hole array in the high-speed APD. This work provides a promising method to design high-speed and high-efficiency normal-incidence Ge/Si heterostructure APDs for optical interconnect systems.

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A review on the role of nanotechnology in the development of near-infrared photodetectors: materials, performance metrics, and potential applications

Gundepudi,

Neelamraju,

Sangaraju

et al. 2023

J Mater Sci

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Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks

Cited by 13 publications

References 44 publications

Study on the Filter Integrated with High Transmission and Ultra-Wideband Electromagnetic Shielding Function in the View of Surface Plasmon

Study on the Filter Integrated with High Transmission and Ultra-Wideband Electromagnetic Shielding Function in the View of Surface Plasmon

High-Performance Normal-Incidence Ge/Si Meta-Structure Avalanche Photodetector

A review on the role of nanotechnology in the development of near-infrared photodetectors: materials, performance metrics, and potential applications

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