High purity twisted light from a metasurface solid state resonator

2020 ◽  
Author(s):  
Hend Sroor ◽  
Yao-Wei Huang ◽  
Bereneice Sephton ◽  
Darryl Naidoo ◽  
Adam Valles ◽  
...  
Keyword(s):  
Solid State ◽  
High Purity ◽  
Twisted Light

Preparation of High-Purity Ultrafine α-Al2O3 by Solid-State Reaction at Room Temperature

2008 ◽  
Vol 368-372 ◽  
pp. 683-685
Author(s):  
Cheng Wei Hao ◽  
Bo Lin Wu ◽  
Ji Yan Li
Keyword(s):  
Solid State ◽  
High Purity ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Raw Materials ◽  
Phase Particle ◽  
Phase Transformation Temperature ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Α Al2o3

Ammonium aluminium carbonate hydroxide (AACH), with a small quantity of γ-AlOOH, was synthesized through solid-state reaction at room temperature using AlCl3·6H2O and NH4HCO3 as raw materials and polyethylene glycol (PEG-10000) as the dispersant. After calcined at 1100°C for 1.5h, α-Al2O3 powders with primary particle sizes of 20~30nm were obtained. The crystal phase, particle size and morphology of the high-purity ultrafine α-Al2O3 were characterized. The results showed that a small quantity of γ-AlOOH in the AACH decomposed and formed crystal seeds. The presence of crystal seeds reduced the nucleation activation energy and therefore reduced the phase transformation temperature.

Synthesis of high-purity Li8ZrO6 powder by solid state reaction under hydrogen atmosphere

2016 ◽  
Vol 109-111 ◽  
pp. 1739-1743 ◽  
Author(s):  
Kiyoto Shin-mura ◽  
Yu Otani ◽  
Seiya Ogawa ◽  
Eiki Niwa ◽  
Takuya Hashimoto ◽  
...  
Keyword(s):  
Solid State ◽  
High Purity ◽  
Solid State Reaction ◽  
Hydrogen Atmosphere

Synthesis of High Purity Yb3+-Doped Lu2O3 Powder for High Power Solid-State Lasers

2011 ◽  
Vol 94 (9) ◽  
pp. 3001-3005 ◽  
Author(s):  
Woohong Kim ◽  
Colin Baker ◽  
Guillermo Villalobos ◽  
Jesse Frantz ◽  
Brandon Shaw ◽  
...  
Keyword(s):  
Solid State ◽  
High Power ◽  
High Purity ◽  
Solid State Lasers

scholarly journals Controlling light’s helicity at the source: orbital angular momentum states from lasers

2017 ◽  
Vol 375 (2087) ◽  
pp. 20150436 ◽  
Author(s):  
Andrew Forbes
Keyword(s):  
Angular Momentum ◽  
Solid State ◽  
Orbital Angular Momentum ◽  
Laser Cavity ◽  
Solid State Lasers ◽  
On Demand ◽  
Twisted Light ◽  
Optical Modes ◽  
On Chip

Optical modes that carry orbital angular momentum (OAM) are routinely produced external to the laser cavity and have found a variety of applications, thus increasing the demand for integrated solutions for their production. Yet such modes are notoriously difficult to produce from lasers due to the strict symmetry requirements for their creation, together with the need to break the degeneracy in helicity. Here, we review the progress made since 1992 in producing such twisted light modes directly at the source, from gas to solid-state lasers, bulk to integrated on-chip solutions, through to generic devices for on-demand OAM in both scalar and vector forms. This article is part of the themed issue ‘Optical orbital angular momentum’.

Generation of tunable high-purity microwave and terahertz signals by two-frequency solid state lasers

2004 ◽  
Author(s):  
Marc Brunel ◽  
Ngoc Diep Lai ◽  
M. Vallet ◽  
Albert Le Floch ◽  
Fabien Bretenaker ◽  
...  
Keyword(s):  
Solid State ◽  
High Purity ◽  
Solid State Lasers

scholarly journals An uncondensed lignin depolymerized in the solid state and isolated from lignocellulosic biomass: a mechanistic study

2018 ◽  
Vol 20 (18) ◽  
pp. 4224-4235 ◽  
Author(s):  
Ning Li ◽  
Yanding Li ◽  
Chang Geun Yoo ◽  
Xiaohui Yang ◽  
Xuliang Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Lignocellulosic Biomass ◽  
High Purity ◽  
Mechanistic Study ◽  
Condensed Form

Lignin was depolymerized in the solid state and separated from lignocellulosic biomass in high-purity and in a less condensed form for valorization.

The Detection of Superlattice Lines in Cu-Zn Alloys using a Solid State Detector

1992 ◽  
Vol 36 ◽  
pp. 671-677
Author(s):  
E.A. Payzant ◽  
H.W. King
Keyword(s):  
Solid State ◽  
High Purity ◽  
High Energy ◽  
Electronic Energy ◽  
High Energy Resolution ◽  
X Ray Diffraction ◽  
Solid State Detector ◽  
High Purity Germanium ◽  
Multichannel Analyser ◽  
State Detector

AbstractUsing a high purity germanium solid state detector with sufficiently high energy resolution to discriminate between copper Kα and Kβ radiation, the superlattice reflections of the ordered Cu-Zn β′ brass structure have be detected by the anomalous dispersion effect. By coupling the high purity germanium solid state detector to a multichannel analyser, the superlattice reflections of the β′ brass structure were also detected by energy dispersive x-ray diffraction. Other applications for this combination of high resolution detector, electronic energy discriminator and multichannel analyser are indicated.

Preparation of Yb-Doped Sc2O3 Transparent Ceramics for Laser Applications

2008 ◽  
Vol 1111 ◽  
Author(s):  
Laurence Longuet ◽  
Anne-Cecile Bravo ◽  
Denis Autissier ◽  
Pascal Vissie ◽  
Jean-Louis Longuet ◽  
...  
Keyword(s):  
Solid State ◽  
High Purity ◽  
Solid State Reaction ◽  
Transparent Ceramics ◽  
Reaction Route ◽  
Laser Applications ◽  
Sintering Aid ◽  
Solid State Reaction Route ◽  
Sintering Behaviour ◽  
Sintered Materials

AbstractPolycrystalline transparent Yb:Sc2O3 ceramics were obtained in the best conditions by a solid-state reaction route using high purity Sc2O3 and Yb2O3 powders with TEOS as a sintering aid. The as-prepared powders containing various ytterbium content were characterized by BET measurements, XRD and FEG-SEM. The sintering behaviour of the powders was investigated by dilatometry. The sintered materials microstructures were observed by FEG-SEM. EPMA allowed to characterize the repartition of the dopant Yb3+ in the Sc2O3 matrix.

Superconductivity in Y-Ba-Cu-Ag-O and Y-Ba-Cu-Pt-O Systems

1987 ◽  
Vol 99 ◽  
Author(s):  
V. T. Kovachev ◽  
M. M. Gospodinov ◽  
E. S. Vlachov ◽  
V. A. Lovchinov ◽  
P. K. Svestarov ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Transition Temperature ◽  
Solid State ◽  
Superconducting State ◽  
High Purity ◽  
Solid State Synthesis ◽  
Pure Oxygen ◽  
Ac Magnetic Susceptibility ◽  
Source Materials

A STUDY OF THE Y-Ba-Cu-Ag-O SYSTEM: The specimens studied were produced using the standard ceramic technique. High purity source materials Y2O3, BaCO3CuO, and Ag2O were used. Solid state synthesis was carried out at 900 C for six hours in oxygen ambient. Pressed samples of 16 mm diameter and 2 mm thick were processed in an atmosphere of pure oxygen at 950 C for 12 hours. The transition temperature to the superconducting state was measured by the four point probe resistance technique. The ac magnetic susceptibility was determined by the method outlined in [1].

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