High-performance upconversion luminescent waveguide using a rare-earth doped microtube with beveled ends

2019 ◽  
Vol 7 (40) ◽  
pp. 12704-12708 ◽  
Author(s):  
Shaozuo Huang ◽  
Huan Chen ◽  
Tao He ◽  
Changjian Zhang ◽  
Chengyun Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Near Infrared ◽  
Light Emission ◽  
Signal Transmission ◽  
Upconversion Luminescence ◽  
Coupling Efficiency ◽  
Optical Signal ◽  
Infrared Light ◽  
Light Excitation ◽  
Rare Earth Doped

Upconversion luminescence-based waveguides can achieve optical signal transmission and visible light emission with near-infrared light excitation and their quality is highly dependent on the coupling efficiency between the light and waveguide.

Near-Infrared Light Emission from of Er-Doped ZnO Thin Film in Micropits Processed on Si Substrate

2006 ◽  
Vol 320 ◽  
pp. 113-116
Author(s):  
Shigeru Tanaka ◽  
Yukari Ishikawa ◽  
Naoki Ohashi ◽  
Junichi Niitsuma ◽  
Takashi Sekiguchi ◽  
...  
Keyword(s):  
Thin Film ◽  
Near Infrared ◽  
Light Emission ◽  
Infrared Light ◽  
Zno Thin Film ◽  
Si Substrate ◽  
Near Infrared Light ◽  
Transmission Electron ◽  
Doped Zno ◽  
Er Doped

We have obtained Er-doped ZnO thin film in a micropattern of reverse trapezoids processed on Si substrate by sputtering and ultrafine polishing techniques. Near-infrared light emission was detected successfully from the thin film filling a single micropit with 10 μm square. Transmission electron microscopy (TEM) observation showed epitaxial growth of ZnO crystals along the curvature of the micropit.

scholarly journals A facile method for preparing Yb3+-doped perovskite nanocrystals with ultra-stable near-infrared light emission

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17635-17641 ◽  
Author(s):  
Chunqian Zhang ◽  
Aidi Zhang ◽  
Taoran Liu ◽  
Lin Zhou ◽  
Jun Zheng ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emission ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Perovskite Nanocrystals ◽  
Excellent Stability

A facile method for fabricating CsPbBr3:Yb3+@SiO2 NCs which guarantees high PLQY and excellent stability at the same time.

scholarly journals Enhanced UV Light Emission by Core-Shell Upconverting Particles Powering up TiO2 Photocatalysis in Near-Infrared Light

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 232
Author(s):  
Agnieszka Jarosz-Duda ◽  
Paulina O’Callaghan ◽  
Joanna Kuncewicz ◽  
Przemysław Łabuz ◽  
Wojciech Macyk
Keyword(s):  
Near Infrared ◽  
Light Emission ◽  
Uv Light ◽  
Protective Layer ◽  
Upconversion Emission ◽  
High Photocatalytic Activity ◽  
Infrared Light ◽  
Core Shell ◽  
The Core ◽  
Surface Luminescence

The core-shell NaYb0.99F4:Tm0.01@NaYF4 upconverting particles (UCPs) with a high UV emission to apply in NIR-driven photocatalysis were synthesized. The influence of the Yb3+ doping concentration in NaYxF4:Yb0.99−xTm0.01 core particles, and the role of the NaYF4 shell on the upconversion emission intensity of the UCPs were studied. The absorption of NIR light by the obtained UCPs was maximized by increasing the Yb3+ concentration in the core, reaching the maximum for Y3+-free particles (NaYb0.99F4:Tm0.01). Additionally, covering the NaYb0.99F4:Tm0.01 core with a protective layer of NaYF4 minimized the surface luminescence quenching, which significantly improved the efficiency of upconversion emission. The high intensity of the UV light emitted by the NaYb0.99F4:Tm0.01@NaYF4 under NIR irradiation resulted in a high photocatalytic activity of TiO2 (P25) mixed with the synthesized material.

scholarly journals Influences of weather phenomena on automotive laser radar systems

2011 ◽  
Vol 9 ◽  
pp. 49-60 ◽  
Author(s):  
R. H. Rasshofer ◽  
M. Spies ◽  
H. Spies
Keyword(s):  
High Performance ◽  
Signal Transmission ◽  
Optical Signal ◽  
Laser Radar ◽  
Radar Signal ◽  
Radar Systems ◽  
Perception System ◽  
Theoretical Investigations ◽  
Physical Principles ◽  
Transmission Models

Abstract. Laser radar (lidar) sensors provide outstanding angular resolution along with highly accurate range measurements and thus they were proposed as a part of a high performance perception system for advanced driver assistant functions. Based on optical signal transmission and reception, laser radar systems are influenced by weather phenomena. This work provides an overview on the different physical principles responsible for laser radar signal disturbance and theoretical investigations for estimation of their influence. Finally, the transmission models are applied for signal generation in a newly developed laser radar target simulator providing – to our knowledge – worldwide first HIL test capability for automotive laser radar systems.

Cutaneous melanin exhibiting fluorescence emission under near-infrared light excitation

2006 ◽  
Vol 11 (3) ◽  
pp. 034010 ◽  
Author(s):  
Zhiwei Huang ◽  
Haishan Zeng ◽  
Iltefat Hamzavi ◽  
Abdulmajeed Alajlan ◽  
Eileen Tan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Fluorescence Emission ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Light Excitation

Influence of Dislocation Loops on the Near-Infrared Light Emission From Silicon Diodes

2007 ◽  
Vol 54 (8) ◽  
pp. 1860-1866 ◽  
Author(s):  
Tu Hoang ◽  
J. Holleman ◽  
Phuong LeMinh ◽  
J. Schmitz ◽  
T. Mchedlidze ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emission ◽  
Infrared Light ◽  
Dislocation Loops ◽  
Near Infrared Light

Near-infrared light-emitting devices from individual heavily Ga-doped ZnO microwires

2017 ◽  
Vol 5 (10) ◽  
pp. 2542-2551 ◽  
Author(s):  
Gao-Hang He ◽  
Ming-Ming Jiang ◽  
Lin Dong ◽  
Zhen-Zhong Zhang ◽  
Bing-Hui Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emission ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Doped Zno

Electrically driven near-infrared light-emission from individual heavily Ga-doped ZnO microwires has been achieved, which can be analogous to incandescent sources.

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