scholarly journals Detection and study of polarized pulsed photoluminescence of diamonds for mapping of natural diamond

2021 ◽  
Vol 2127 (1) ◽  
pp. 012050
Author(s):  
G K Krasin ◽  
N G Stsepuro ◽  
M S Kovalev ◽  
P A Danilov ◽  
S I Kudryashov
Keyword(s):  
Optical Properties ◽  
Natural Diamond ◽  
The State ◽  
Photoluminescence Spectroscopy ◽  
Structural Description ◽  
State Of Polarization

Abstract The bulk mapping of natural diamond poses problems where it is required to characterize various defects and measure their optical properties in volume. The combination of photoluminescence spectroscopy methods and methods for detecting the state of polarization in the volume will expand the functionality for mapping natural and artificial diamonds. The implemented methods will be an effective tool for the structural description of diamond optical centers.

The Depolarization of Light Scattered in Solutions of Rubber Like Polymers

1947 ◽  
Vol 20 (4) ◽  
pp. 912-915
Author(s):  
V. Tsvetkov ◽  
E. Frisman
Keyword(s):  
Optical Properties ◽  
Scattered Light ◽  
Incident Light ◽  
Incident Beam ◽  
The State ◽  
Dispersed Phase ◽  
Colloidal Solutions ◽  
State Of Polarization ◽  
Depolarization Of Light

Abstract Investigation of the depolarization of light, Δ, scattered by colloidal solutions is one of the methods of determining the dimensions, shape and optical properties of the particles suspended in them. A study of the state of polarization of the scattered light is found to be especially helpful in this respect. If the incident beam is directed along the x-axis of a rectangular system of coördinates and observation is carried out along the y-axis, the degree of depolarization of the scattered light is usually determined by the ratio Δ=Ix'Iz, where Ix and Iz are the x- and z-components, respectively, of the scattered light. Here one should discriminate between the quantity Δv (the electrical vector of the incident light parallel to the z-axis) and the quantity Δh (the electrical vector of the incident light parallel to the y-axis). On the basis of theories advanced by Rayleigh, Mie, and Gans one may draw the following general conclusions regarding the relation between Δ and the properties of the dispersed phase.

A Novel Technique for Reconstruction of the State of Polarization by Fourier Transform Holography

1998 ◽  
Vol 27 (2) ◽  
pp. 63-69
Author(s):  
Soumika Munsm ◽  
S. Bandyopadhyay ◽  
Ajay Ghosh
Keyword(s):  
Fourier Transform ◽  
The State ◽  
Novel Technique ◽  
State Of Polarization

When elites polarize over polarization: Framing the polarization debate in Turkey – RETRACTED

2018 ◽  
Vol 59 ◽  
pp. 109-133
Author(s):  
Senem Aydın-Düzgit ◽  
Evren Balta
Keyword(s):  
Civil Society ◽  
Qualitative Interviews ◽  
Radical Change ◽  
The State ◽  
Considerable Degree ◽  
Institutional Factors ◽  
Degree Of Polarization ◽  
State Of Polarization ◽  
The Government ◽  
Near Future

AbstractThis article aims to explore the views of the Turkish elite on the state of polarization in Turkey. By identifying four political frames—namely, harmony, continuity/decline, conspiracy, and conflict—that selected Turkish political and civil society elites use in discussing the phenomenon of polarization in the country through their contributions to a workshop and in-depth qualitative interviews, the article finds that there is a considerable degree of polarization among the Turkish elite regarding their views on the presence of polarization in Turkey. Moreover, this overlaps with the divide between the government and the opposition in the country. An analysis of the justificatory arguments employed in constituting the aforementioned frames shows that, while those elites who deny the existence of polarization seek its absence in essentialist characteristics of society, in reductionist comparisons with history, or in internal/external enemies, those who acknowledge polarization’s presence look for its roots in political and institutional factors and processes. The article highlights how, given the denial of polarization by the pro-government elite and the substantial gap between the two camps’ justificatory narratives, the currently reported high rates of polarization in Turkey can, at best, be expected to remain as is in the near future, barring a radical change in political constellations.

Polarized Photoluminescence Study on AlGaN of AlGaN/GaN Heterostructure

2005 ◽  
Vol 892 ◽  
Author(s):  
Sachio Kitagawa ◽  
Kenichi kosaka ◽  
Tadayoshi Tuchiya ◽  
Akira Suzuki ◽  
Tsutomu Araki ◽  
...  
Keyword(s):  
Optical Properties ◽  
Mole Fraction ◽  
Photoluminescence Spectroscopy ◽  
Energy Separation ◽  
Biaxial Strain ◽  
Photoluminescence Study ◽  
Gan Heterostructure

AbstractOptical properties of tensile strained AlxGa1-xN films of AlxGa1-xN/GaN heterostructures grown on sapphire were investigated by using polarization-resolved photoluminescence spectroscopy. Emissions from AlxGa1-xN with polarization of E//c and E⊥c were obtained at different peak energies. The energy separation of these emissions with polarization was increased linearly with the increase in Al mole fraction of the strained AlxGa1-xN, indicating that the energy separation was due to biaxial strain in the tensile strained AlxGa1-xN.

scholarly journals Polarimetry for Photonic Integrated Circuits

2019 ◽  
Vol 9 (15) ◽  
pp. 2987
Author(s):  
Moritz Baier ◽  
Axel Schoenau ◽  
Francisco M. Soares ◽  
Martin Schell
Keyword(s):  
Integrated Circuits ◽  
Photonic Integrated Circuits ◽  
The State ◽  
Polarization Dependence ◽  
Complete Picture ◽  
Wide Range ◽  
State Of Polarization ◽  
Matrix Yielding ◽  
Polarization Of Light

Photonic integrated circuits (PICs) play a key role in a wide range of applications. Very often, the performance of PICs depends strongly on the state of polarization of light. Classically, this is regarded as undesirable, but more and more applications emerge that make explicit use of polarization dependence. In either case, the characterization of the polarization properties of a PIC can be a nontrivial task. We present a way of characterizing PICs in terms of their full Müller matrix, yielding a complete picture of their polarization properties. The approach is demonstrated by carrying out measurements of fabricated PICs.

LIGHT SCATTERING TECHNIQUES FOR DISCRIMINATING BETWEEN OIL AND PARTICULATES IN CONTAMINATED WATER

1977 ◽  
Vol 1977 (1) ◽  
pp. 153-156 ◽  
Author(s):  
Bruce Friedman
Keyword(s):  
Particulate Matter ◽  
Light Scattering ◽  
Intensity Distribution ◽  
Scattered Light ◽  
Incident Light ◽  
Real Life ◽  
The State ◽  
Oil Droplets ◽  
State Of Polarization

ABSTRACT Light scattering techniques are used in several oil-in-water monitors, proposed or in existence. Particulate matter which may interfere with these monitors is also frequently found in oily wastes. An analysis is made of the potential of using measurements of the angular intensity distribution of scattered light in conjunction with determination of the state of polarization of the scattered light for discriminating between oil and particulates. The size conditions which apply to the oil droplets and particulates relative to the incident light allow the scattered light angular intensity distribution to be treated as a consequence of a combination of classical diffraction and of geometrical refraction and reflection. The state of polarization of the scattered light for oil droplets is investigated using expressions for the electric field which are approximations to the expressions of the Mie theory. For the particulate matter, the state of polarization is probed on the basis of light reflected from a plane. It is found that it would be difficult to discriminate between oil and particulates using measurements of the angular intensity distribution of scattered light even in conjunction with the determination of the state of polarization of the scattered light in a real life situation.

Self-organization of the state of polarization in the mid-point of telecommunication optical fibers

2019 ◽  
Vol 36 (9) ◽  
pp. 2360
Author(s):  
A. Fusaro ◽  
N. Berti ◽  
M. Guasoni ◽  
H. R. Jauslin ◽  
A. Picozzi ◽  
...  
Keyword(s):  
Optical Fibers ◽  
The State ◽  
Self Organization ◽  
State Of Polarization
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