Zobrazeno 1 - 10
of 107
pro vyhledávání: '"H. Ringhofer"'
Publikováno v:
BJU International. 89:44-47
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::298590ab7c3c2e70b5e4caafff142bbe
https://doi.org/10.1046/j.1464-410x.2002.02548.x
https://doi.org/10.1046/j.1464-410x.2002.02548.x
Publikováno v:
The European Physical Journal D - Atomic, Molecular and Optical Physics. 23:291-297
We investigate analytically and numerically the influence of the type of the photorefractive nonlinear response on the periodic states (attractors) which occur during feedback controlled 2W-coupling and correspond to almost 100% diffraction efficienc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f40d968a5450757d90f7787854cac78
https://doi.org/10.1140/epjd/e2003-00057-1
https://doi.org/10.1140/epjd/e2003-00057-1
Publikováno v:
Optics Communications. 216:225-231
We investigate the spatial structure of dynamic index and light gratings which arise during feedback-controlled photorefractive beam coupling with ultimate diffraction parameters. It is shown that the interference light fringes are split inside the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3cbe553a74102d7ac675051be87b86f
https://doi.org/10.1016/s0030-4018(02)02332-5
https://doi.org/10.1016/s0030-4018(02)02332-5
Publikováno v:
Journal of Applied Physics. 92:6252-6261
The propagation of waves supported by capacitively loaded loops is investigated using a circuit model in which each loop is coupled magnetically to a number of other loops. Since the coupling is due to induced voltages the waves are referred to as ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12c4e3bf5fe8902f5fb881fba8744d6d
https://doi.org/10.1063/1.1510945
https://doi.org/10.1063/1.1510945
Publikováno v:
IEE Proceedings - Microwaves, Antennas and Propagation. 149:153-159
The effective aperture of a receiving dipole is studied under matched and unmatched conditions. The results for the matched case correspond to expectations but lack of matching is shown to lead to quite unusual features. Analytical integration of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dc52ece877a47c76c781c8aaea0b7d5
https://doi.org/10.1049/ip-map:20020388
https://doi.org/10.1049/ip-map:20020388
Publikováno v:
AEU - International Journal of Electronics and Communications. 56:115-119
Summary The role of the geometrical configuration of isotropic elements in a planar array is investigated with a view to achieve maximum directivity. Distinctions are made between normal and superdirective regions. It is further shown that the config
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73341fdfd20e82503a71da561dd3d803
https://doi.org/10.1078/1434-8411-54100080
https://doi.org/10.1078/1434-8411-54100080
Autor:
A.E. Zagorskiy, Ekaterina Shamonina, Klaus H. Ringhofer, Yi Hu, S. F. Nichiporko, V. Ya. Gayvoronsky, V.V. Shepelevich, N. N. Egorov
Publikováno v:
Ferroelectrics. 266:305-333
The dependence of the diffraction efficiency of holograms and the effective gain of the signal wave on the polarization and orientation angles is investigated for two-wave mixing in transmission geometry in cubic (111)-cut photorefractive piezocrysta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e78149861b5587540c5a63319394184
https://doi.org/10.1080/00150190211441
https://doi.org/10.1080/00150190211441
Publikováno v:
Optical Materials. 18:119-122
Holographic recording in reflection geometry offers high lateral image resolution (necessary to analyze microscopically structured objects, e.g. biological cellular structures) and a compact and simple setup (Denisyuk holography). Our aim is to combi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a53f20a22582a6c15ddb967ee087b413
https://doi.org/10.1016/s0925-3467(01)00146-x
https://doi.org/10.1016/s0925-3467(01)00146-x
Autor:
Yi Hu, V.V. Shepelevich, V. P. Kamenov, Klaus H. Ringhofer, V. Ya. Gayvoronsky, Ekaterina Shamonina
Publikováno v:
Optical Materials. 18:139-142
We present a new method to solve the coupled equations for two-wave mixing (TWM) in sillenites. The first-order solutions, based on the approximation of a weak grating and strong optical activity, can describe BSO crystals well. The result is general
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8482d1c84c27624d55fc3e53844ef8b8
https://doi.org/10.1016/s0925-3467(01)00151-3
https://doi.org/10.1016/s0925-3467(01)00151-3
Autor:
S. G. Odoulov, V. Ya. Gayvoronsky, Konstantin Shcherbin, S. Pavlyuk, Evgeniy V. Podivilov, V. P. Kamenov, Klaus H. Ringhofer, B. I. Sturman
Publikováno v:
Optics Communications. 192:399-405
We investigate the physics of a novel nonlinear system, feedback controlled photorefractive beam coupling. Inertia of the electronic feedback is found to be an element crucial for permanent operation of this system. Theoretically and experimentally w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4521e01e42acb4c6f3a2077df22e0eab
https://doi.org/10.1016/s0030-4018(01)01210-x
https://doi.org/10.1016/s0030-4018(01)01210-x