scholarly journals Bistability patterns and nonlinear switching with very high contrast ratio in a 1550 nm quantum dash semiconductor laser

2012 ◽  
Vol 101 (16) ◽  
pp. 161117 ◽  
Author(s):  
A. Hurtado ◽  
M. Nami ◽  
I. D. Henning ◽  
M. J. Adams ◽  
L. F. Lester
Keyword(s):  
Semiconductor Laser ◽  
Contrast Ratio ◽  
High Contrast ◽  
Quantum Dash ◽  
Nonlinear Switching ◽  
Very High

A GaAs/AlGaAs asymmetric Fabry-Perot reflection modulator with very high contrast ratio

1993 ◽  
Vol 5 (1) ◽  
pp. 55-58 ◽  
Author(s):  
D.S. Gerber ◽  
R. Droopad ◽  
G.N. Maracas
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Fabry Perot ◽  
Very High

scholarly journals Colorless-to-colorful switching electrochromic polyimides with very high contrast ratio

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Qiang Zhang ◽  
Chou-Yi Tsai ◽  
Lain-Jong Li ◽  
Der-Jang Liaw
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Very High

scholarly journals Laser fusion energy from p-7Li with minimized radioactivity

2012 ◽  
Vol 30 (3) ◽  
pp. 459-463 ◽  
Author(s):  
M. Ghoranneviss ◽  
A. Salar Elahi ◽  
H. Hora ◽  
G.H. Miley ◽  
B. Malekynia ◽  
...  
Keyword(s):  
Cross Sections ◽  
Fusion Energy ◽  
Contrast Ratio ◽  
Picosecond Laser ◽  
Laser Pulses ◽  
Laser Ignition ◽  
Laser Fusion ◽  
High Contrast ◽  
Solid Deuterium ◽  
Very High

AbstractThe new possibility of side-on laser ignition of p-11B with negligible radioactivity encouraged to study the fusion of solid state p-7Li fuel that again turns out to be only about 10 times more difficult than the side-on ignition of solid deuterium-tritium using petawatt-picosecond laser pulses at anomalous interaction conditions if very high contrast ratio. Updated cross sections of the nuclear reaction are included.

scholarly journals Patterned waveguide liquid crystal displays

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41693-41702
Author(s):  
Yunho Shin ◽  
Jinghua Jiang ◽  
Guangkui Qin ◽  
Qian Wang ◽  
Ziyuan Zhou ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Switching Time ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
High Contrast ◽  
High Brightness ◽  
Photo Polymerization ◽  
Ultrafast Switching ◽  
Light Waveguide ◽  
Polymer Stabilized

A polymer stabilized LC based light waveguide display is reported. Performance is improved by patterned photo-polymerization or electrode. It has high brightness, ultrafast switching time, high contrast ratio, and high transmittance for transparent and augmented displays.

scholarly journals Full-frame and high-contrast smart windows from halide-exchanged perovskites

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
You Liu ◽  
Jungan Wang ◽  
Fangfang Wang ◽  
Zhengchun Cheng ◽  
Yinyu Fang ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Smart Window ◽  
Frame Size ◽  
Smart Windows ◽  
Ideal Solutions ◽  
Ion Gel ◽  
And Control ◽  
Colour Rendering ◽  
Perovskite Photovoltaic

AbstractWindow glazing plays an essential role to modulate indoor light and heat transmission, which is a prospect to save the energy cost in buildings. The latest photovoltachromic technology has been regarded as one of the most ideal solutions, however, to achieve full-frame size (100% active area) and high-contrast ratio (>30% variable in visible wavelength) for smart window applicability is still a challenge. Here we report a photovoltachromic device combining full-transparent perovskite photovoltaic and ion-gel based electrochromic components in a vertical tandem architecture without any intermediated electrode. Most importantly, by accurately adjusting the halide-exchanging period, this photovoltachromic module can realize a high pristine transmittance up to 76%. Moreover, it possesses excellent colour-rendering index to 96, wide contrast ratio (>30%) on average visible transmittance (400-780 nm), and a self-adaptable transmittance adjustment and control indoor brightness and temperature automatically depending on different solar irradiances.

Stacked metal cathode for high-contrast-ratio polymeric light-emitting devices

2005 ◽  
Vol 86 (14) ◽  
pp. 143514 ◽  
Author(s):  
S. H. Li ◽  
H. Liem ◽  
C. W. Chen ◽  
E. H. Wu ◽  
Z. Xu ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Metal Cathode

Extreme Adaptive Optics

2018 ◽  
Vol 56 (1) ◽  
pp. 315-355 ◽  
Author(s):  
Olivier Guyon
Keyword(s):  
Adaptive Optics ◽  
Thermal Emission ◽  
Contrast Ratio ◽  
Angular Separation ◽  
Circumstellar Disks ◽  
Spectroscopic Characterization ◽  
Central Star ◽  
High Contrast ◽  
Direct Imaging ◽  
Segmented Mirror

Over the last two decades, several thousand exoplanets have been identified, and their study has become a high scientific priority. Direct imaging of nearby exoplanets and the circumstellar disks in which they form and evolve is challenging due to the high contrast ratio and small angular separation relative to the central star. Exoplanets are typically within 1 arcsec of, and between 4 and 10 orders of magnitude fainter than, the stars they orbit. To meet these challenges, ground-based telescopes must be equipped with extreme adaptive optics (ExAO) systems optimized to acquire high-contrast images of the immediate surrounding of nearby bright stars. Current ExAO systems have the sensitivity to image thermal emission from young massive planets in near-IR, while future systems deployed on Giant Segmented Mirror Telescopes will image starlight reflected by lower-mass rocky planets. Thanks to rapid progress in optical coronagraphy, wavefront control, and data analysis techniques, direct imaging and spectroscopic characterization of habitable exoplanets will be within reach of the next generation of large ground-based telescopes.

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