Temat: 42.70.Gi - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Light-Induced Modification of 3D Photonic Band Structure Detected by Means of PhotoreflectionD
Autorzy:: Kapitonov, A. M.
Kachan, S. M.
Ponyavina, A. N.
Gaponenko, S. V.
Bogomolov, V. N.
Prokofiev, A. V.
Sitarek, P.
Misiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/1995551.pdf
Data publikacji:: 1999-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.70.Qs
42.70.Gi
Opis:: Porous synthetic opal possessing a three-dimensional photonic band structure of semimetallic type was impregnated with polycrystalline CdS. The photonic stop band in (111) direction was examined by means of photoreflection technique. Under cw laser excitation of semiconductor inclusions the reflectance of the system changes indicating a modification of photonic band structure. A possible mechanism is discussed. Numerical simulations within the framework of quasicrystalline approximation are given.
Źródło:: Acta Physica Polonica A; 1999, 95, 3; 335-342
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Aberrations of Betanin Sensitized Gelatin Microlenses
Autorzy:: Vasiljević, D.
Murić, B.
Pantelić, D.
Panić, B.
Powiązania:: https://bibliotekanauki.pl/articles/1795610.pdf
Data publikacji:: 2009-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.15.Fr
42.70.Gi
81.05.Zx
42.79.Bh
Opis:: Aberrations of the concave aspherical microlenses are presented. Microlenses are produced by using betanin sensitized gelatin and 532 nm laser irradiation (2nd Nd:YAG harmonic). Aberrations are analyzed by calculation of the longitudinal spherical aberration and the root mean square RMS spot radius. Three presented microlenses had good image quality for the large F number and the moderate field angle.
Źródło:: Acta Physica Polonica A; 2009, 116, 4; 592-594
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Imaging Properties of Laser-Produced Parabolic Profile Microlenses
Autorzy:: Vasiljević, D.
Murić, B.
Pantelić, D.
Panić, B.
Powiązania:: https://bibliotekanauki.pl/articles/2047865.pdf
Data publikacji:: 2007-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.70.Gi
81.05.Zx
42.30.Lr
42.15.Fr
Opis:: Imaging properties of the concave microlens are presented. Microlenses are produced by using tot'hema eosin sensitized gelatin and 532 nm laser irradiation (2nd Nd:YAG harmonic). Imaging properties of microlenses are analized by calculation: the RMS wave front aberration, the diffraction point spread function cross section and the spot diagram. The obtained microlenses had excellent, near diffraction limited, performance for the moderate field angles.
Źródło:: Acta Physica Polonica A; 2007, 112, 5; 993-999
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: White Light Snapshot of Non-Equilibrium High-Spin State in a Molecular Crystal
Autorzy:: Kaszub, W.
Collet, E.
Cailleau, H.
Servol, M.
Boillot, M.
Tissot, A.
Lorenc, M.
Powiązania:: https://bibliotekanauki.pl/articles/1489969.pdf
Data publikacji:: 2012-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 82.53.Xa
78.47.D-
42.70.Gi
31.70.Ks
Opis:: The spin-crossover compound $[(TPA)Fe(TCC)]PF_6$ was experimentally investigated using time-resolved optical pump and supercontinuum probe technique. Changes of VIS optical density at thermal equilibrium of a crystal with different high-spin/low-spin fractions are compared to changes recorded picoseconds after femtosecond laser excitation. A white light snapshot of the high-spin state at 180 K is extracted from time-resolved spectra. Our results indicate that the temperature of the electronic state affects the absorption spectra of high- and low-spin states.
Źródło:: Acta Physica Polonica A; 2012, 121, 2; 324-327
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Specific Features of Content Dependences for Energy Gap in $In_{x}Tl_{1-x}I$ Solid State Crystalline Alloys
Autorzy:: Kashuba, A.
Piasecki, M.
Bovgyra, O.
Stadnyk, V.
Demchenko, P.
Fedorchuk, A.
Franiv, A.
Andriyevsky, B.
Powiązania:: https://bibliotekanauki.pl/articles/1398249.pdf
Data publikacji:: 2018-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.20.Nr
71.20.-b
42.70.Gi
71.35.-y
Opis:: A series of $In_{x}Tl_{1-x}I$ (x=0.4-0.9) single crystalline solid state alloys were successfully synthesized by the vertical Bridgman method. For the first time the density functional theory based band structure calculations are performed and features of the band energy dispersion are discussed. Comparison with the experimental energy gap $E_{g}$ obtained from the optical photoconductivity is discussed. An essential role of the localized defects and excitons in formation of the edge photoconductivity is analyzed. Relation between the crystal structure and photoconductivity of the materials studied is discussed. Also the origin of the principal valence and conduction bands is explored. Experimental measurements of the band gap $E_{g}$ by the optical and photoconductivity methods have given opposite dependences with respect to the indium content x. Features of the photoconductivity spectra for different crystallographic directions have been discussed with taking into account the chemical bonds anisotropy.
Źródło:: Acta Physica Polonica A; 2018, 133, 1; 68-75
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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