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Optica Applicata
2010 Vol. 40, nr 4 975--989
EN Quasi-isotropic approximation (QIA) of geometrical optics is outlined, which describes properties of electromagnetic waves in weakly anisotropic media, including weakly anisotropic fibers, liquid crystals and weakly magnetized plasma. QIA equations stem directly from the Maxwell equations and have t[...]
2
80%
Optica Applicata
2013 Vol. 43, nr 2 s. 205--216
EN The expressions for the elements of the on-axis and transverse generalized Stokes parameters of random electromagnetic quasi-homogeneous beams on propagation are presented and are used to study the polarization properties of the beams. Some typical numerical calculations of the on-axis and transvers[...]
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80%
Opto - Electronics Review
EN The motion of light scattering particles of the Mie and Rayleigh micro- and nano-range type in the inhomogeneously-polarized optical field, with allowance made for the Brownian movement, is analysed in the paper. The spatial modulation of polarization in the observation plane determines the spatial [...]
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Opto - Electronics Review
EN The use of the method of field polarization modulation for defining the degree of coherence of circularly polarized waves is offered. The role of the reference circularly polarized wave in transforming the spatial distribution of polarization into the depth of visibility modulation of the resulting [...]
5
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Polish Journal of Chemistry
EN Spectroscopy with linearly polarized light on aligned samples (LD spectroscopy) is a useful technique that may greatly enhance the possibilities for determining sample structure, making spectral assignments, and several other tasks, generally based on a determination of transition moment directions.[...]
6
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Optica Applicata
EN A highly efficient multiple polarized beam interferometer for the generation of hexagonal array is reported. An expression for the intensity distribution is worked out using Jones' calculus and computed pattern is compared with the experimental results. The array pattern could be scanned over large [...]
7
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Archives of Metallurgy and Materials
EN This paper presents the results of the corrosion resistance of Sn-Ag-Cu alloys in air-saturated aqueous solutions containing NO3-, SO42- ions, whose concentration was equivalent to their contents in acid rains and in concentrations 10 - 100 times higher. T[...]
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Optica Applicata
EN The practical problem of the lack of a quarter-wave plate for an arbitrary wavelength has been solved in our earlier work. The possibility of substituting this plate with a combination of two (or more) retardation plates with phase shift different from 90° has been shown. However, there are some spe[...]
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Optica Applicata
2015 Vol. 45, nr 2 163--172
EN In this paper, polarization dependence of patterning effects in quantum well semiconductor optical amplifier-based wavelength conversion is experimentally and theoretically investigated. The carrier and photon density rate equations are numerically solved by using the time-domain traveling wave mode[...]
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Opto - Electronics Review
EN In the paper, degree of polarization fading during transmission of partially coherent light through bulk birefringent optical materials is analysed. It is also shown that classical Mueller matrix formalism for such cases should be changed and a depolarisation matrix should be added. As an example in[...]
11
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Materials Science Poland
2017 Vol. 35, No. 4 694--701
EN This paper presents an investigation on corrosion behavior of Sn-1.0Ag-0.5Cu-XAl (X = 0, 0.1, 0.5, 1.0) by means of polarization and electrochemical impedance spectroscopy (EIS) measurements in 3.5 wt.% NaCl solution. The results show that addition of aluminum into SAC105 shifts the corrosion curren[...]
12
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Optica Applicata
EN Heterodyne holographic interferometry is a well-known interferometric technique for high precision measurements of the phase difference between two recorded wave fronts. These wave fronts are typically registered at a given distance from the object under inspection. Although the affinity of heterody[...]
13
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Opto - Electronics Review
EN The liquid crystal (LC) filters with hybrid, circular-planar, and circular-homeotropic alignments of the LC layer have been analysed in detail. The exploited alignment of the LC layer assures the uncommon polarizing properties of the filter. We manage to observe that transmissions in such a filter c[...]
14
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Archives of Metallurgy and Materials
PL W pracy dokonano elektrochemicznej charakterystyki polaryzacyjnej stopów typu TbNi48M0.2 (M = Sb, Bi lub Al) w środowisku silnie alkalicznym. Stwierdzono, że wszystkie badane stopy TbNi48M0.2 pasywują się w 6 M KOH. Obecność bizmutu w badanym stopie prowadzi do wzrostu gęstości prądów anodowych, a t[...]
EN In this work an initial characterisation of electrochemical polarization behaviour of TbNi4.8M0.2 (M = Sb, Bi or Al) type alloys in strong alkaline solution has been carried out. It was established that all the tested TbNi4.8M0.2 alloys passivated in 6 M KOH. It is shown that the presence of Bi in t[...]
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Optica Applicata
EN We investigate theoretically and experimentally the astigmatic transformations of Bessel beams at propagation perpendicularly to the c-axis of a uniaxial crystal. The analogy between this transformation and the astigmatic distortion of the plane wave by an inclined axicon is analytically shown. The [...]
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Opto - Electronics Review
EN The reduction of the dark current without reducing the photocurrent is a considerable challenge is developing far-infrared (FIR)/terahertz detectors. Since quantum dot (QD) based detectors inherently show low dark current, a QD-based structure is an appropriate choice for terahertz detectors. The wo[...]
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Optica Applicata
EN In this paper, we consider a hybrid photonic crystal symmetrically deformed (Bg5/Cu3/Bg5) consisting of the third generation of the copper mean sequence (Cu3), sandwiched between two Bragg mirrors at the fifth generation (Bg5). Our system realiz[...]
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Optica Applicata
EN In the present paper, investigation on the polarization and coherence fluctuations of a flat-topped array beam in non-Kolmogorov atmospheric optics links has been presented. For this purpose, the spectral degree of polarization and coherence at the receiver plane is analytically formulated via the e[...]
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Biuletyn Wojskowej Akademii Technicznej
PL W pracy przedstawiono zasady działania źródła promieniującego o zmiennej polaryzacji, którego konstrukcja bazuje na falowodzie kołowym całkowicie wypełnionym ferrytem lub periodycznym rdzeniem ferrytowo-dielektrycznym polaryzowanym czterobiegunowym polem magnetycznym. Badania numeryczne i eksperymen[...]
EN In this paper, the antenna with electronically controled polarization is presented. Some research refered to the ferrite phase shifters allowed for coming to the conclusion that there is possible to develop a microwave radiation source with electronically controlled polarization. Such an antenna con[...]
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Archiwum Odlewnictwa
2006 R. 6, nr 21/2 296--302
PL W pracy przedstawiono wyniki badań dotyczących zwiększenia odporności korozyjnej stali DC01 A w środowisku 5%NaCl, poprzez dodanie do roztworu odpowiednio przygotowanego preparatu wykonanego z tufu wulkanicznego, działającego jako nieorganiczny inhibitor korozji. Przeprowadzona rentgenowska analiza [...]
EN In the work was carry out investigations corrosion resistance the steel DC01A in 5% solution NaCl and additions vulcano tuf as inhibitor reagent, The diffraction X-ray analysis of vulcano tuf indicated that consist et two phase: sanidine K(AlSi3O8) and quartz SiO2. The vulcano tuf actin as inhibitor[...]
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