Photostimulated Ultraviolet Luminescence for Anti‐Counterfeiting
Laser & Photonics Reviews. Early View 2401606. Research Article. Photostimulated Ultraviolet Luminescence for Anti-Counterfeiting in Daylight Conditions. Photostimulated luminescence
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Laser & Photonics Reviews. Early View 2401606. Research Article. Photostimulated Ultraviolet Luminescence for Anti-Counterfeiting in Daylight Conditions. Photostimulated luminescence
Under blue laser excitation, the SMAN-0.1LS can achieve an ultra-high luminescence saturation threshold of 52.22W/mm2, which is a breakthrough performance that
An electric field is applied to a layered device comprising the persistent phosphor. A novel phenomenon, namely the electrical stimulation for brighter persistent
The obtained hybrid material is found to present persistent luminescence at 700 nm after charging with a 980 nm laser. A mechanism is proposed to explain this energy
Latest Development on Pulsed Laser Deposited ThinFilms for Advanced Luminescence Applications November 2020 Coatings 10(Thin and Thick Films: Deposition, Characterization and Applications):1078
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The effects of both laser power and laser power density on the luminescence properties and colorimetric properties of the YAG:Ce are studied systematically. The results show that a single
The spectrum of the luminescence pulse from collapsing laser-induced bubbles in water and cryogenic liquids has been measured. For small bubbles in water the spectrum approximates
By contrast, upon 800-nm fs-pulsed laser excitation with an equivalent power density at average (~1.10 kW cm-2), the UCNPs displayed bright luminescence (insets of Fig.
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Up-conversion luminescence (UCL) is defined as a nonlinear luminescence process, which absorbs two or more long wavelength photons (usually in the near infrared
Over 48.9% of absorbed laser power generates heat, inducing luminescence saturation. To effectively handle heat dissipation, we introduce a Luminescence-Refrigeration
(Phosphor-converted white laser diode (PC-WLD) lighting shows promise for high-luminance solid-state illumination. However, luminescence saturation, stemming from optical and thermal
High Luminescence Saturation Y 3 Al 5 O 12: Ce 3+-Diamond Composite Color Converter for High-Brightness Laser-Driven White Lighting
For more than 50 years compounds based on trivalent terbium (Tb 3+) are known as phosphors with strong green luminescence [1, 2].For a long time, it was not thought to be suitable as a
The laser irradiation induced a transient conductive channel inside the Si wafer through laser-induced thermal and photoconductivity effects and generated several electrons
Traditional persistent luminescence (PersL) materials depend on the distribution of inherent traps within their structure, which are usually narrow and discontinuous,
Laser & Photonics Reviews is an interdisciplinary journal at the interface of photonics and optics publishing outstanding science for more than 15 years. Abstract Non
However, luminescence saturation, stemming from optical and thermal factors and, hampers high‐power LD lighting progress. This study delves into the light‐thermal dynamics between
The luminescence of “optical battery” can persist more than 2 h (Fig. 2 D). After short (5 s) charging process by 980-nm NIR laser, the “optical battery” implant can generate
Laser headlights provide exceptional visibility but come at a premium cost. Each type has its pros and cons, so understanding your vehicle and driving needs will help you make the best choice
In a proof‐of‐concept experiment, accompanied with red laser diode, the constructed light engine yields a high brightness with luminous flux of 1310 lm (luminance of
Er-Eu co-doped Bi2Ga4O9 persistent luminescence nanoparticles with up- and down-conversion luminescence was prepared. The material for dual-mode temperature
In this paper, persistent luminescence nanoparticles (PLNPs) of Bi1.91Ga4O9: 0.04 Er3 +, 0.05 Eu3+ with up- and down-conversion luminescence were prepared by a simple and low-cost co
In this work, we show the influence of Cr3+ ion concn. (1-7 mol%) on the cryst. phase and shape, laser power dependent luminescence response, and temp. response in
We developed a procedure to prepare luminescent LiYF4:Yb/LiYF4 and LiYF4:Yb,Er/LiYF4 core/shell nanocrystals with a size of approximately 40 nm revealing
Preparation of blue luminescence gold quantum dots using laser ablation in aromatic solvents. October 2021; Applied Nanoscience 11(1) lithium ion batteries. Appl Surf
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Narrow Bandwidth Luminescence in Sr2Li(Al,Ga)O4:Eu2+ by Selective Site Occupancy Engineering for High Definition Displays Laser & Photonics Reviews ( IF 9.8) Pub Date : 2021
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The luminescence spectra of NDs are shown in Fig. Fig.5. 5. Figure Figure5a 5 a shows un-passivated NDs'' maximal luminescence at 440 nm and 447 nm, which are nearly equal under
Makita SK700GDZ 12V Max Li-ion CXT Green Multi-Line Laser - Batteries and Charger Not Included . The SK700GDZ is a green laser Multi-Line Laser, with 4 vertical lines plus 4
In this letter, a laser-driven white light source with high luminescence saturation was fabricated by combining blue laser chips and an Al2O3-doped reflective color converter.
FIGURE 1. In a photoluminescence imaging setup, the output from a high-power fiber-coupled infrared (IR) laser is expanded to homogeneously illuminate a silicon brick,
The CDs luminescence peaks induced by UV are well reproducible and grow about linearly with the CDs concentration, i.e. with the laser irradiation time, as evident in the
Two-dimensional (2D) blue persistent luminescence nanosheets have been designed and engineered as “optical battery” for highly efficient photodynamic tumor treatment
The temperature-dependent luminescence of the thermally coupled intensity ratio of emission green 1 (520 nm) and green 2 (540 nm) can be applied as a temperature sensor.
Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Traditional persistent luminescence (PersL) materials depend on the distribution of inherent traps within their structure, which are usually narrow and discontinuous, thereby restricting their functionality to a limited temperature range.
The 980 nm laser is employed here for fluorescence emission as the excitation wavelength matches with the electronic transition levels of Yb 3+ so that a higher quantum yield can be achieved.
This Special Issue covers various luminescent materials that are currently a focus of research, such as carbon dots, perovskites, metal complexes, lanthanide phosphors, and luminescent hybrid materials, exploring their photophysical properties and achieving promising applications in chemical sensing and photocatalysis.
In the present study, we swiftly capture luminescence signals once the particles are optically trapped, preventing any potential interference from photothermal heating of the particle. The crucial parameter here is sensitivity, denoted as S, which represents how quickly FIR changes in response to variations in temperature.
However, the non-Gaussian beam intensity profile of the 980 nm laser inhibits stable trapping of the particles and restricts power dependence studies of single-particle emission. Figure 3. Upconversion luminescence of trapped single particles at various irradiation intensities (a) UCMP, (c) UCMP@SiO 2, and (e) UCMP@SiO 2 @Au NPs.