Wszystkie pola: 42.79.Hp - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Acoustic Modes Transformation upon Reflection in Tellurium Dioxide Crystal
Autorzy:: Polikarpova, N.
Voloshinov, V.
Powiązania:: https://bibliotekanauki.pl/articles/1383533.pdf
Data publikacji:: 2015-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.20.Hp
42.79.Jq
43.35.Sx
43.35.+d
Opis:: Generation of acoustic shear waves in crystals is one of the main problem of acousto-optics. Launching of the shear waves is much more difficult than the longitudinal modes because of difficulties related to acoustic contact and also because of problems arising from matching of acoustic and electric parameters of piezoelectric transducer. We obtained the transverse waves as a result of longitudinal-shear modes reflection in a crystal. Crystals having the required effect should possess a strong anisotropy of their elastic properties to realize the effective acoustic mode transformation. In this paper, one of the important cases of the acoustic waves reflection is investigated theoretically and experimentally. The research was carried out in the crystal of paratellurite.
Źródło:: Acta Physica Polonica A; 2015, 127, 1; 96-98
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: New Acousto-Optic Regime of Interaction in Media Possessing Strong Elastic Anisotropy
Autorzy:: Voloshinov, V.
Djakonov, E.
Polikarpova, N.
Powiązania:: https://bibliotekanauki.pl/articles/1383161.pdf
Data publikacji:: 2015-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.20.Hp
42.79.Jq
43.35.Sx
43.35.+d
Opis:: We present results on theoretical and first experimental investigation of a new regime of acousto-optic interaction existing in acoustically anisotropic medium. We defined the new regime as "semi-collinear" or "mixed interaction" since it combined properties of the traditional non-collinear diffraction and the pure collinear interaction. The peculiar phenomenon was registered in the tellurium dioxide crystal due to the extremely strong elastic anisotropy of the material. Application of a specific cut of the crystal provided observation of the effect in the middle infrared at the optical wavelength 3.39 μm and at the acoustic frequencies limited to 300 MHz. The observed interaction was characterized by a non-collinear propagation of incident light with respect to acoustic energy flow and simultaneously a collinear propagation of diffracted radiation along the acoustic energy flow. A brief theoretical analysis of the interaction based on wave vector diagrams and two-dimensional coupled wave equations is included in the presentation. Finally, we describe in the paper, the setup and basic details of the carried out acousto-optic experiment.
Źródło:: Acta Physica Polonica A; 2015, 127, 1; 36-42
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "42.79.Hp" wg kryterium: Wszystkie pola

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język