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Wyszukujesz frazę "Tralle, I." wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
Optoelectronic Device Based on Gunn Effect Extended Diode Structure
Autorzy:
Tralle, I.
Powiązania:
https://bibliotekanauki.pl/articles/2047347.pdf
Data publikacji:
2007-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.25.Fx
42.79.Dj
42.79.Gn
42.82.Et
42.82.Fv
Opis:
We discuss the possibility of light control by means of light diffraction by space charge waves which are the periodic domain trains induced at some circumstances in GaAs Gunn effect diode. The two possible regimes of the proposed device are considered: the first one which is analogous to the Bragg diffraction in case of light-acoustic diffraction and the other one, which we call "intermediate", since the parameter Q which distinguishes the Raman-Nath (Q<1) and the Bragg diffraction (Q>10), in this case is≈1 (actually, only bit smaller than 1). Among the advantages of this hypothetical device are the simpler control of operation and perhaps, possibility to couple it with the waveguides and switchers for surface electromagnetic waves and other miniaturized photonic circuits.
Źródło:
Acta Physica Polonica A; 2007, 111, 6; 835-846
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conductance Modulation in Semiconductor Microstructure with Periodic Array of Micromagnets
Autorzy:
Tralle, I.
Powiązania:
https://bibliotekanauki.pl/articles/1992495.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.15.Gd
73.50.Bk
Opis:
A simple theory for the Aharonov-Bohm-like effect (dynamical phase) in semiconductor microstructure, is presented in a paper, assuming a "ballistic spin transport". If in one of the arms of microstructure there is an additional periodic magnetic field, the spin wave function acquires a phase shift due to additional spin precession about that field. By introducing quaternion representation of the elements of propagation matrices, one can calculate the transition coefficient of the structure. It is shown that the deep modulation of the conductance could be achieved.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 603-610
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Undulator-Like Radiation and N² Effects in Semiconductor Microstructures with Grating
Autorzy:
Tralle, I.
Zięba, P.
Powiązania:
https://bibliotekanauki.pl/articles/1402586.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
41.60.-m
42.50.Gy
73.61.Ey
73.40.kp
73.50.Fq
Opis:
In the article the cooperative N²-effects are considered, that is the radiation whose power is ım N², where N is the number of emitters which in this case is equal to the number of electrons in a bunch. The suggested effects are the result of combining two effects: the Gunn-effect in GaAs and undulator-like radiation, or "pumping wave" acting on the electrons and which is the result of undulator field, while the second is the backward effect of radiation which is produced by electrons moving within such microundulator. It is very probable that the effects can be used for the developing of a new semiconductor-based room temperature source of the THz-radiation.
Źródło:
Acta Physica Polonica A; 2015, 128, 2; 228-230
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Undulator-Like Radiation and Cooperative Phenomenon in Semiconductor Microstructure with Grating
Autorzy:
Tralle, I.
Zięba, P.
Powiązania:
https://bibliotekanauki.pl/articles/1490209.pdf
Data publikacji:
2012-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
41.60.-m
42.50.Gy
73.61.Ey
73.40.kp
73.50.Fq
Opis:
In the article the cooperative $N^2$-effect is considered, that is the radiation whose power is ım $N^2$, where N is the number of emitters which in this case is equal to the number of electrons in a bunch. The suggested effect is the result of combining two other effects, Gunn-effect in GaAs and undulator-like radiation which can be produced by means of microstructure with grating (microundulator). It is very probable that the effect can be used for the developing of a new semiconductor-based room temperature source of the THz radiation.
Źródło:
Acta Physica Polonica A; 2012, 121, 2; 522-526
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Qubits in Double Quantum Well Structure
Autorzy:
Jakubczyk, P.
Majchrowski, K.
Tralle, I.
Powiązania:
https://bibliotekanauki.pl/articles/1032436.pdf
Data publikacji:
2017-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.25.Mk
74.55.+v
03.67.Bg
Opis:
We propose a new approach to producing the qubits in electron ballistic transport in low-dimensional structures such as double quantum wells or double quantum wires. Next, we examine the possibility to produce quantum entanglement in the framework of the Jaynes-Cummings model and shown that at least in principle, the entanglement can be achieved due to series of "revivals" and "collapses" in the population inversion due to the interaction of a quantized single-mode EM-field with a two-level system.
Źródło:
Acta Physica Polonica A; 2017, 132, 1; 115-117
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photogalvanic Effect in Semiparabolic Quantum Well
Autorzy:
Majchrowski, K.
Paśko, W.
Tralle, I.
Powiązania:
https://bibliotekanauki.pl/articles/1791300.pdf
Data publikacji:
2009-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.40.+w
73.21.Fg
Opis:
In this work we studied the charge carriers behaviour in quantum structures where the symmetry with respect to space coordinates and time-reversal symmetry are broken simultaneously. As the model of such structures we considered finite semiparabolic quantum well (we considered earlier the case of triangular QW) placed in external magnetic field. We have shown by numerical analysis that the energy spectra of charge carriers in such structures are anisotropic with respect to in-plane (transverse) motion $ϵ_{n}( + k_{x})$ ≠ $ϵ_{n}(-k_{x})$. This leads to the anisotropy of charge carriers in-plane momentum transfer which, in its turn leads to the anisotropy of photoconductivity $σ( + k_{x})$ ≠ $σ(-k_{x})$ and as it follows from our calculations, the effect though not very great, could be measurable for the magnetic field of about few T.
Źródło:
Acta Physica Polonica A; 2009, 116, 5; 854-856
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exciton Binding Energy and Oscillator Strength in a Shallow Quantum Well in an External Magnetic Field
Autorzy:
Zięba, P.
Piętka, B.
Łusakowski, J.
Tralle, I.
Powiązania:
https://bibliotekanauki.pl/articles/1402589.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.35.Ji
75.75.-c
73.21.Fg
62.20.-x
Opis:
We discuss the influence of an external magnetic field on the exciton energy and the exciton oscillator strength in the shallow quantum wells. We include into consideration the Coulomb attraction between electron and hole, which is rarely taken into account. We self-consistently solve the Schrödinger equation to compare the obtained results with the experimental values.
Źródło:
Acta Physica Polonica A; 2015, 128, 2; 237-239
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New type of composite gyrotropic metamaterial
Autorzy:
Paśko, W.
Zięba, P.
Tralle, I.
Çoruh, A.
Powiązania:
https://bibliotekanauki.pl/articles/1055044.pdf
Data publikacji:
2017-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Xj
81.05.Zx
78.67.Pt
42.70.-a
Opis:
In this work we examined the possibility of fabricating the metamaterial in a relatively simple way. Our idea was to use the three-component mixture of ingredients, where one of them is responsible for the negative permeability μ(ω) of hypothetical metamaterial, while the other two cause the negative value of effective permittivity ε(ω). In our previous work, we considered Hg_{1-x}Cd_xTe semiconductor compound as one of the ingredients of mixture. As fabrication of the Hg_{1-x}Cd_xTe is related to using mercury which is very poisoning, we tried to exclude this material. In the work we proved by numerical simulations the possibility of substituting mercury cadmium telluride by Pb_{1-x}Sn_xTe. We have shown by computer simulations that by the proper fitting of the parameters, e.g. the radius of nanoparticles, their magnetic moments, the relative concentration of ingredients, etc., it is possible to obtain the metamaterial with negative refraction index in a relatively broad range of temperatures and magnetic fields. The last seems to be very promising in terms of practical applications of metamaterials.
Źródło:
Acta Physica Polonica A; 2017, 132, 1; 121-123
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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