Gain determination of new erbium - bismuth doped germanium silicate optic glass for double-band optical amplification DOI Creative Commons
David Mareš,

V. Jeřábek,

Jiří Šmejcký

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июль 25, 2024

Abstract This research focuses on the gain measurement and modeling of optical silica-germanium glass doped by erbium bismuth activators to implement a two-band planar amplification. Using two activators, active centers with germanium (BAC-Ge) expand amplification near-infrared bandwidth up 1650 nm, where attenuation telecommunication fibers is less than 0.3 dB/km. We described mechanism based luminescence spectral response activators. determined differential fabricated glasses using pulse method calculation authentic model waveguide propagation equations. A single source wavelength 1480 nm was used for pumping in both bands. The emission absorption cross-section coefficients were from spectrum Füchtbauer-Ladenburg equation Gaussian approximation McCumber's theory. calculated values are good agreement results. Our leads conclusion that BAC-Ge activity conditioned location Bi atoms germano-silicate matrix high GeO2 content.

Язык: Английский

Exploring the Structural, Mechanical and Optical Properties of K2InGaX6 (X = Cl, Br or I) Compounds by Density Functional Theory DOI

Nabeel Israr,

S. Khan, Adel El‐marghany

и другие.

Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Язык: Английский

Процитировано

2
Near-infrared luminescence from Li2ZnGeO4:Ln3+ (Ln = Er, Tm, Ho) DOI Creative Commons
Nikola Bednarska‐Adam, Marta Kuwik, Tomasz Goryczka

и другие.

RSC Advances, Год журнала: 2025, Номер 15(11), С. 8784 - 8794

Опубликована: Янв. 1, 2025

Enhanced NIR emission due to characteristic transitions of Ln 3+ ions in Li 2 ZnGeO 4 is observed. Decay curve analysis indicates that the from excited states long-lived.

Язык: Английский

Процитировано

1
High-performance self-powered NIR photodetectors enabled by PbSe quantum dot surface passivation with P3HT through bulk-heterojunction integration DOI
Muhammad Sulaman, T.-T. Han, Muhammad Qasim

и другие.

Materials Today Chemistry, Год журнала: 2024, Номер 43, С. 102466 - 102466

Опубликована: Дек. 12, 2024

Язык: Английский

Процитировано

3
Study on the microstructure and luminescent properties of Dy3+-Doped tellurite glasses DOI

Zelin He,

Dechun Zhou,

Liufei Chen

и другие.

Optics & Laser Technology, Год журнала: 2024, Номер 183, С. 112343 - 112343

Опубликована: Дек. 17, 2024

Язык: Английский

Процитировано

3
Direct Blue‐LED Pumped Broadband Long‐Wavelength Near‐Infrared Emitter Based on Ni2+ Mono‐Doped Double Perovskite Materials for Versatile Optical Applications DOI Open Access
Zhihao Zhou, G. Ji,

Zhuowei Fei

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Abstract Long‐wavelength near‐infrared (NIR) phosphors (1000–2000 nm) have shown great promise in intelligent NIR spectroscopy technology fields. However, developing capable of directly absorbing blue light and emitting over 1000 nm still remains a significant challenge. Here, series ultra‐broadband with emission peaks longer than 1500 is achieved by incorporating single activator Ni 2+ ion into ALaMgMO 6 (A = Ca, Sr, Ba; M Sb, Nb, Ta) double perovskite hosts. Significantly, through composition modulation strategy, the designed exhibit an intense absorption band centered at 440 nm, making these mono‐doped pumped commercial LED chips without strictly introducing sensitized ions or energy transfer process. The origination effective blue‐light excitable NIR‐II to NIR‐III phosphor unraveled Rietveld structural refinement local symmetry analysis. Additionally, developed demonstrated potential spectroscopic analysis, night‐vision technology, non‐destructive visualization, information encryption identification. This work provides feasible strategy solve problem that ‐doped cannot be can promote development more long‐wavelength materials for multiple photonic applications.

Язык: Английский

Процитировано

0
Transition Metal Ions‐Doped Lead‐Free Halide Double Perovskites for Stable Light Emission: Optical Properties and Optoelectronic Applications DOI
Qiaochu Chen, Yue Shen, Hongbin Yan

и другие.

Advanced Materials Technologies, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Abstract Lead‐free double perovskites (LFDP) have attracted considerable attention due to their remarkable optoelectronic characteristics, which include tunable bandgaps spanning the entire visible spectrum, high photoluminescence quantum yields (PLQY), and wide emission bandwidths. The incorporation of transition metal ions into lead‐free perovskites, as an efficient method for tailoring optical properties, is crucial both foundational research practical applications in devices such light‐emitting diodes (LEDs), anti‐counterfeiting, temperature sensors, X‐ray scintillators. In this review, recent progress design ion‐doped summarized, briefly introduce strategies effective doping several representative perovskites. manipulation properties through ion doping, focusing on enhanced stability, increased luminescent efficiency, tuning bands, luminescence lifetimes are highlighted. conclusion, challenges perspectives dynamic area addressed.

Язык: Английский

Процитировано

0
Ultralow‐Power Highly‐Selective Near‐Infrared (≈850 nm) Carbon Nanotube Flexible Optoelectronic Synaptic Transistors for Real‐Time Trajectory Tracking DOI
Chengyong Xu, Min Li,

Nianzi Sui

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Abstract Optoelectronic synaptic devices are promising candidate components for brain‐like efficient neuromorphic computing systems. The development of highly‐selective near‐infrared (NIR) optoelectronic is important realizing more optical computing, night monitoring, and robot visual perception. In this work, ultralow‐power (56 aJ per light pulse), NIR (≈850 nm) transistor based on carbon nanotube thin film transistors developed by modification the organic photosensitive material in device channels. showed high sensitivity selectivity to 850 nm pulse light. It noted that response currents after stimulation a single can be nearly six times higher than those stimulated UV light, which attributed IHIC has low bandgap, strong absorption, ideal energy band alignment with nanotubes. Under pulsed stimulation, range complex functions exhibited, including excitatory postsynaptic currents, paired‐pulse facilitation, transition from short‐term plasticity long‐term plasticity, spike‐timing‐dependent image perception memory functions. Significantly, real‐time trajectory tracking car drone under nighttime conditions successfully simulated using array.

Язык: Английский

Процитировано

0
The influence of Ho2O3 content on structural, spectroscopic, thermal, and dielectric properties of CaBTe glasses DOI

Otávio C. Silva Neto,

João G. de Oliveira Neto, Hiasmin Aparecida Gomes Silva

и другие.

Journal of Materials Science Materials in Electronics, Год журнала: 2025, Номер 36(12)

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Manipulating the emission spectrum of active materials by using photonic-crystal microcavity DOI
Muhammad Hanif Ahmed Khan Khushik,

Shahzadi Bano,

Chun Jiang

и другие.

Journal of Optics, Год журнала: 2025, Номер 27(5), С. 055201 - 055201

Опубликована: Май 1, 2025

Abstract Tailoring the emission spectra of active ions has received significant attention from researchers in last few decades due to its applicability narrow-line width and low-threshold lasers as well broadband photonic devices. One- three-dimensional crystals, crystal microcavities, metamaterials, plasmonic materials have been used manipulate optically materials. In this paper, one-dimensional microcavities are provide a dielectric environment for manipulation luminescent ions, finite-difference time-domain -based simulations carried out observe behavior placed microcavities. The numerical results show that spectrum material can be tailored broader spectrum, narrower with multiple peaks, depending on local density states microcavity.

Язык: Английский

Процитировано

0
Bi Cluster Engineering for Tunable Broadband NIR Optical Response DOI

Jingfei Chen,

Quan Dong,

Ziang Liu

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 30, 2024

Abstract Near‐infrared (NIR) broadband active photonic materials play a crucial role in various domains such as optical communication, phototherapy, and medical imaging. However, the construction of NIR with tunable response still remains great challenge. This manuscript proposes topological structure engineering strategy Bi‐activated glass for realization controllable emission. By manipulating glass, Bi cluster configuration can be precisely control, size from 2.78 to 1.64 nm. Correspondingly, properties including emission, excited state absorption (ESA), even unsaturable loss (UL) rationally switched. Based on above findings, cluster‐activated bulk glasses, fibers, derived devices notably improved performance successfully fabricated. Their application potentials communication imaging are also demonstrated. The study highlights promise advancing devices. Furthermore, topological‐mediated regulation may provide new insights into fundamental science cutting technology other materials.

Язык: Английский

Процитировано

2