Zobrazeno 1 - 10
of 194
pro vyhledávání: '"J. Frejlich"'
Autor:
J. Frejlich, P.M. Garcia
Publikováno v:
Optics and Lasers in Engineering. 32:515-527
We describe the latest improvements in holographic interferometry that enable the real-time measurement of vibrational modes and static deformations in surfaces using low-power laser illumination and a photorefractive Bi 12 TiO 20 crystal as the reco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abffa3d33db14075335b644a3ac7d8c0
https://doi.org/10.1016/s0143-8166(99)00073-1
https://doi.org/10.1016/s0143-8166(99)00073-1
Publikováno v:
Physical Review A. 56:R2541-R2544
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05d9c7c8c546c8503120bedd80403421
https://doi.org/10.1103/physreva.56.r2541
https://doi.org/10.1103/physreva.56.r2541
Autor:
P. M. Garcia, N. J. H. Gallo, A. A. Freschi, José Pedro Andreeta, Alexei A. Kamshilin, J.F. Carvalho, J. Maracaiba, Antônio Carlos Hernandes, T. Jaaskelainen, J. Frejlich, Victor V. Prokofiev
Publikováno v:
Scopus-Elsevier
Photorefractive Bi 12 TiO 20 single crystals of high optical quality were grown in a resistive heating furnace from high temperature nonstoichiometric (10: 1) solutions of Bi 2 O 3 and TiO 2 at pulling rates 0.3-0.8 mm/h at rotation 20-30 rpm along t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::253a7f25f432c0000852c0bd2621191e
https://doi.org/10.1002/crat.2170300205
https://doi.org/10.1002/crat.2170300205
Autor:
J. Frejlich, R. Kumamoto
Publikováno v:
SPIE Proceedings.
Photo-electromotive-force effect induced by an oscillating speckle pattern of light onto photorefractive CdTe: V and Bi 12 TiO 20 is studied. The light pattern is produced by the reflected laser beam on a vibrating surface. As a result of the photo-e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8ea8fb7133c821723257380dccda7d9
https://doi.org/10.1117/12.870679
https://doi.org/10.1117/12.870679
Autor:
P. M. Garcia, J. Frejlich
Publikováno v:
Applied Physics A Solids and Surfaces. 55:49-54
We report the presence of quasipermanent effects of photochromic and hole-photorefractive nature in Bi12TiO20 (BTO) at low irradiance at 514.5 nm. A new selective two-wave mixing (S2WM) detection technique was used that allows to separately detect ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::822fa7fc769709b446151716e650ac52
https://doi.org/10.1007/bf00324601
https://doi.org/10.1007/bf00324601
Autor:
J. Frejlich, N. R. Inocente-Junior, R. Montenegro, T. O. dos Santos, J. F. Carvalho, K. D. Ferreira, J. C. Launay, C. Longeaud, Niklaus Ursus Wetter, Jaime Frejlich
Publikováno v:
AIP Conference Proceedings.
Photorefractive materials exhibit photoconductive and electro‐optic properties. The first step in the optical recording process in these materials is the building up of a spatial modulation of electric charges via charge carriers excitation from lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4105405e6ac283d882c6585c5cb7de17
https://doi.org/10.1063/1.2926956
https://doi.org/10.1063/1.2926956
Autor:
A. A. Freschi, A. D. S. Cortes, D. A. Donatti, J. Frejlich, Niklaus Ursus Wetter, Jaime Frejlich
Publikováno v:
AIP Conference Proceedings.
In this work we use a stabilized holographic technique to study both refractive index and absorption gratings recorded in thin films made of Disperse Red 1 (DR1) embedded in an organic polymer matrix (PMMA) deposited on glass substrate. Gratings are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4851d7bc9324f184191fc043398671c7
https://doi.org/10.1063/1.2926886
https://doi.org/10.1063/1.2926886
Publikováno v:
AIP Conference Proceedings.
We report the use of the photo‐electromotive force (photo‐emf) effect produced by a vibrating speckle pattern of light, generated by laser radiation at 1064nm, in the volume of a photorefractive vanadium doped CdTe crystal. This effect is used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d075ad03705dcf1d928a891b6a1c2368
https://doi.org/10.1063/1.2926953
https://doi.org/10.1063/1.2926953
Autor:
R. Montenegro, I. de Oliveira, A. A. Freschi, J. Frejlich, Niklaus Ursus Wetter, Jaime Frejlich
Publikováno v:
AIP Conference Proceedings.
The measurement of the phase shift φ between the transmited and difracted beams interfering along the same direction behind the hologram recorded in a photorefractive crystal is directly and accurately measured using a self‐stabilized recording te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a50fe3e1132268dd7cc31214e989a0e
https://doi.org/10.1063/1.2926880
https://doi.org/10.1063/1.2926880
Publikováno v:
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..
We present a closed loop technique that allows the generation of stabilized oscillating holograms in photorefractive crystals. The properties of the photorefractive waves are measured and compared to the theory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a75ff2109b480376235cbca790881b30
https://doi.org/10.1109/cleoe.2005.1567953
https://doi.org/10.1109/cleoe.2005.1567953