High Performance Wide Angle DBR Design for Optoelectronic Devices

The visible and infrared wavelengths are the most frequently used electromagnetic (EM) waves in the frequency spectrum; able to penetrate the atmosphere and reach Earth’s surface. These wavelengths have attracted much attention in solar energy harvesting; thermography; and infrared imaging applications for the detection of electrical failures; faults; or thermal leakage hot spots and inspection of tapped live energized components. This paper presents a numerical analysis of a compact cubic cross-shaped four-layer metamaterial absorber (MA) structure by using a simple metal-dielectric-metal-dielectric configuration for wideband visible and infrared applications. The proposed MA achieved above 80% absorption in both visible and near-infrared regions of the spectrum from 350 to 1250 nm wavelength with an overall unit cell size of 0.57λ × 0.57λ × 0.59λ. The SiO2 based anti-reflection coating of sandwiched tungsten facilitates to achieve the wide high absorption bandwidth. The perceptible novelty of the proposed metamaterial is to achieve an average absorptivity of 95.3% for both visible and infrared wavelengths with a maximum absorptivity of 98% from 400 nm to 900 nm. Furthermore, the proposed structure provides polarization insensitivity with a higher oblique incidence angle tolerance up to 45°.

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“…As with the materials, the MA’s absorption is related to the number of layers [ 47 , 48 , 49 ]. The proposed design is a four-layer MA.…”

Section: Results Analysismentioning

confidence: 99%

Polarization Independent Metamaterial Absorber with Anti-Reflection Coating Nanoarchitectonics for Visible and Infrared Window Applications

et al. 2022

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“…A popular choice for the bottom reflector is a distributed Bragg reflector (DBR) owing to its high reflectivity for a specific range of wavelengths. [29]. The DBR is a stack of multiple layers that consist of two different types of dielectric layers.…”

Section: Methodsmentioning

confidence: 99%

Miniaturized and high efficient GaN-based blue micro-LEDs for future display applications

Javaid,

Mahmood,

Mehmood

2024

Illumination Optics VII

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To design an ultra-small blue micro light emitting diode µ-LED (< 5 µm) with high light extraction efficiency is one of the bottlenecks currently. How the extraction efficiency can be boost of a very small sized µLED is taking the attention of most of the researchers. As the surface-to-volume ratio of µLEDs is much larger than traditional LEDs. We designed and developed a miniaturized GaN-based vertical blue µLED and conduct a systematic research by simulating the structure in finite-difference-time-domain (FDTD). We develop a miniaturized state of the art blue µ-LED (GaN) which exhibits high light extraction efficiency of 70.4% having the size of 1 µm × 1 µm. The µ-LED is backed by multi distributed bragg reflector to achieve the high extraction efficiency, M-DBR consists layers of Ti3O5 and SiO2. During investigating the proposed µLED design we derived that the light extraction efficiency (LEE) has a strong dependency on some of the structural parameters of µ-LED i.e. thickness of each layers specifically MQW, µ-LED chip size, chip shape, orientation and position of the dipole source. The proposed GaN-based blue µ-LED structure is evaluated, simulated and optimized for different dipole orientation and positions with different chip sizes and shapes. At end come up with the smallest and most optimized vertical blue µ-LED structure for future display applications.

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“…Tang, M., see Tong, T., JPHOT Feb. 2021 7200512Tang, Q., see Zhang, C., JPHOT Feb. 2021 7800408Tang, R., Liu, B., Ren, J., Mao, Y., Zhao, J., Han, S., Han, Y., and Chen, S., FBMC/OQAM Security Strategy Based on Diversity DNA Encryption; Tang, R., see Emara, S., JPHOT Oct. 2021 Tao, T., see Zhao, J., JPHOT Feb. 2021 1-7 Tao, T., see Zhi, T., JPHOT Feb. 2021 8200206 Tao, W., see Shengtao, G., JPHOT Feb. 2021 Tong, T., Chen, X., Chen, Y., Sun, Q., Chen, Z., Liu, D., and Tang, M., Performance-Enhanced DMT System With Joint Precoding and Probabilistic Constellation Shaping; JPHOT Feb. 2021 7200512…”

Section: Ns Pulsementioning

confidence: 99%

“…Amplification inGold-Viral Particle Ligation Towards Fast Infection Screening ;JPHOT June 2021 3900111 Zhang, H., Deng, D., Zu, J., Chen, J., and Li, D., Numerical Model of Chirped Pulse Amplification in Pulsed Synchronously Pumped Low-Repetition-Rate Fiber Amplifiers; JPHOTJune 2021 1500511 Zhang, H., see Xu, Y., JPHOT June 2021 6800508 Zhang, H., Xu, M., Jia, Z., Campos, L.A., Lu, Z., Song, C., Barrios, P., Rahim, M., Zhao, P., and Poole, P.J., Quantum Dot Coherent Comb Laser Source for Converged Optical-Wireless Access Networks; JPHOT June 2021 7200609 Zhang, H., see Deng, Y., JPHOT June 2021 6500110 Zhang, H., Chen, C., Ma, C., Chen, C., Zhu, Z., Yang, B., Chen, F., Jia, D., Li, Y., and Lv, X., Feature Fusion Combined With Raman Spectroscopy for Early Diagnosis of Cervical Cancer; JPHOT June 2021 3900311 Zhang, H., see Pei, R., JPHOT June 2021 8600118Zhang, H., Wang, G., Zhang, J., Wang, F., Yan, X., Zhang, X., and Cheng, T., Design and Optimization of a Single-Mode Multi-Core Photonic Crystal Fiber With the Nanorod Assisted Structure to Suppress the Crosstalk ; 7200206Zhang, H., see Wu, J.,JPHOT Oct. 2021 1500205Zhang, H., see Wang, J., 7100206Zhang, J., see Niu, W.,JPHOT Feb. 2021 7900712Zhang, J., see Melanson, B.,JPHOT Feb. 2021 8200310 Zhang, J., Li, Y., Hu, S., Zhang, W., Wan, Z., Yu, Z., and Qiu, K., Joint Modulation Format Identification and OSNR Monitoring Using Cascaded Neural Network With Transfer Learning; JPHOT Feb. 2021 7200910 Zhang, J., see Zhang, W., JPHOT April 2021 7100113 Zhang, J., see Huang, Y., JPHOT April 2021 2500309 Zhang, J., see Wang, B., JPHOT April 2021 7200210+ Check author entry for coauthorsHigh Performance Wide Angle DBR Design for Optoelectronic Devices. Zhi, T., +,JPHOT Feb. 2021 8200206 Improved Optical Properties of Nonpolar AlGaN-Based Multiple Quantum Wells Emitting at 280 nm. Zhao, J., +,JPHOT Feb. 2021 1-7 Arrays With Pixel Sizes From 5 to 50 µm.…”

mentioning

confidence: 99%

2021 Index IEEE Photonics Journal Vol. 13

2021

IEEE Photonics J.

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This index covers all technical items-papers, correspondence, reviews, etc.that appeared in this periodical during 2021, and items from previous years that were commented upon or corrected in 2021. Departments and other items may also be covered if they have been judged to have archival value.The Author Index contains the primary entry for each item, listed under the first author's name. The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and article number. Article numbers are based on specified topic areas and corresponding codes associated with the publication. The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author's name, the publication abbreviation, month, and year, and associated article number. Note that the item title is found only under the primary entry in the Author Index.

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High Performance Wide Angle DBR Design for Optoelectronic Devices

Cited by 9 publications

References 20 publications

Polarization Independent Metamaterial Absorber with Anti-Reflection Coating Nanoarchitectonics for Visible and Infrared Window Applications

Polarization Independent Metamaterial Absorber with Anti-Reflection Coating Nanoarchitectonics for Visible and Infrared Window Applications

Miniaturized and high efficient GaN-based blue micro-LEDs for future display applications

2021 Index IEEE Photonics Journal Vol. 13

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