Characterization of Spatial-Mode Demultiplexer using 1550-nm-band Angularly Multiplexed Volume Holograms

2019 ◽  
Author(s):  
Satoshi Shinada ◽  
Taijun Shiba ◽  
Tomohiro Maeda ◽  
Taketoshi Takahata ◽  
Atsushi Okamoto ◽  
...  
Keyword(s):  
Spatial Mode ◽  
Volume Holograms

Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk

2021 ◽  
Author(s):  
Shuanglu Zhang ◽  
Atsushi Okamoto ◽  
Taijun Shiba ◽  
Hotaka Hayashi ◽  
Kazuhisa Ogawa ◽  
...  
Keyword(s):  
Spatial Mode ◽  
Volume Holograms ◽  
Optical Diffuser ◽  
Exchange Technique

Spatial-Mode Demultiplexer Using 1550-Nm-Band Angularly Multiplexed Volume Holograms

2018 ◽  
Author(s):  
Satoshi Shinada ◽  
Shimpei Shimizu ◽  
Taijun Shiba ◽  
Taketoshi Takahata ◽  
Atsushi Okamoto ◽  
...  
Keyword(s):  
Spatial Mode ◽  
Volume Holograms

scholarly journals Spatial mode demultiplexing technique using angularly multiplexed volume holograms with a phase plate

2017 ◽  
Vol 56 (9S) ◽  
pp. 09NA05
Author(s):  
Shimpei Shimizu ◽  
Atsushi Okamoto ◽  
Fumiya Mizukawa ◽  
Kazuhisa Ogawa ◽  
Akihisa Tomita ◽  
...  
Keyword(s):  
Phase Plate ◽  
Spatial Mode ◽  
Volume Holograms

scholarly journals Enhanced sum frequency generation for ultrasensitive characterization of plasmonic modes

Nanophotonics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 815-822 ◽  
Author(s):  
Min Gao ◽  
Yuhan He ◽  
Ying Chen ◽  
Tien-Mo Shih ◽  
Weimin Yang ◽  
...  
Keyword(s):  
Bound States ◽  
Sum Frequency Generation ◽  
Metal Nanostructures ◽  
Spatial Mode ◽  
Sum Frequency ◽  
Highly Sensitive ◽  
Solid Foundation ◽  
Frequency Generation ◽  
The Continuum

AbstractHighly sensitive characterization of surface plasmon resonance (SPR) modes lays the solid foundation for wide SPR-related applications. Herein, we discover that these SPR modes based on all-metal nanostructures without any probed molecule can be characterized with ultrahigh sensitivities at both excitation and emission wavelengths by utilizing plasmon-enhanced sum frequency generation (PESFG) spectroscopy. The theory of PESFG for sensitively characterizing SPR modes is first validated experimentally. Moreover, we have elaborately demonstrated that PESFG strongly depends on both the resonant wavelengths of SPR modes and spatial mode distributions when azimuthal angles of excitations are varied. Our study not only enhances the understanding of the mechanism that governs PESFG, but also offers a potentially new method for exploring new-style SPR modes (e.g. plasmon-induced magnetic resonance and bound states in the continuum) by PESFG.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

Characterization of Coherent, Ordered Precipitates in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 144-145
Author(s):  
B. H. Kear ◽  
J. M. Oblak
Keyword(s):  
Stable Phase ◽  
Nickel Base Superalloy ◽  
Alloy 718 ◽  
Commercial Alloy ◽  
Precipitate Morphology ◽  
Continuous Precipitation ◽  
Nickel Base ◽  
Base Superalloy ◽  
Strengthening Precipitate

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.

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