Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Luís E. E. de Araujo"'
Publikováno v:
Revista Brasileira de Ensino de Física, Volume: 42, Article number: e20190095, Published: 11 NOV 2019
Revista Brasileira de Ensino de Física, Vol 42 (2019)
Revista Brasileira de Ensino de Física v.42 2020
Revista Brasileira de Ensino de Física
Sociedade Brasileira de Física (SBF)
instacron:SBF
Revista Brasileira de Ensino de Física, Vol 42 (2019)
Revista Brasileira de Ensino de Física v.42 2020
Revista Brasileira de Ensino de Física
Sociedade Brasileira de Física (SBF)
instacron:SBF
Resumo Neste trabalho apresentamos um aparato de baixo custo, lúdico e de fácil acesso para experimentação na área de óptica geométrica. A simplicidade da montagem e a facilidade do manuseio favorecem a aplicação deste projeto, que se propõ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f229d5470d97b9c02749a7d94c9e921
https://doi.org/10.1590/1806-9126-rbef-2019-0095
https://doi.org/10.1590/1806-9126-rbef-2019-0095
Publikováno v:
Optics letters. 44(3)
We describe the experimental observation of nonrectilinear trajectories of a nearly Gaussian light beam propagating in free space, after reflecting from a glass–air interface near critical incidence. The angular-dependent reflection coefficients mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc6becc54a48a378ef5aa94109c08699
https://pubmed.ncbi.nlm.nih.gov/30702700
https://pubmed.ncbi.nlm.nih.gov/30702700
Publikováno v:
Journal of the Optical Society of America B. 38:300
We investigate the Goos–Hänchen and Imbert–Federov shifts of linearly polarized vortex beams undergoing internal reflection in a glass prism in the critical region of incidence. Beam shifts are numerically calculated based on a wavenumber-space
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bdbc834437a54cbc44fd47630a51c0e
https://doi.org/10.1364/josab.410683
https://doi.org/10.1364/josab.410683
Publikováno v:
Repositório da Produção Científica e Intelectual da Unicamp
Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
Repositório Institucional da Unicamp
Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
Repositório Institucional da Unicamp
Agradecimentos: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); The World Academy of Sciences (TWAS); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Abstract: We investigate, both theoretically and experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::454a14680d97e61b2b74f949da5521cf
https://pubmed.ncbi.nlm.nih.gov/29216157
https://pubmed.ncbi.nlm.nih.gov/29216157
Publikováno v:
Journal of the Optical Society of America B. 36:533
Optical beam shifts are very small and challenging phenomena to measure. Weak measurement techniques have been developed to amplify and more easily measure the shifts of spatially coherent beams. We here investigate theoretically a weak measurement t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6b3ff8709d13c26207b66abe77360a6
https://doi.org/10.1364/josab.36.000533
https://doi.org/10.1364/josab.36.000533
By using a weak measurement technique, we investigated the interplay between the angular and lateral Goos-Haenchen shift of a focused He-Ne laser beam for incidence near the critical angle. We verified that this interplay dramatically affects the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c66d030376235ceccab80663112d61fd
http://arxiv.org/abs/1608.07528
http://arxiv.org/abs/1608.07528
Publikováno v:
Optics Letters. 43:4037
We experimentally study the Goos-Hänchen shift of a focused Gaussian optical beam in the critical region of incidence. We directly measure the beam's shift evaluated from the displacement of the location of the beam's intensity peak and its centroid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1aa38280efe3f69a07c6cd162dd0270
https://doi.org/10.1364/ol.43.004037
https://doi.org/10.1364/ol.43.004037
Autor:
Daniel Pereira, A. Mirage, L. S. Cruz, Flavio C. Cruz, Silvânia A. Carvalho, Luís E. E. de Araujo, A. A. Soares
Publikováno v:
Optics Communications. 281:626-632
We performed two-color spectroscopy of the (4s 2 ) 1 S 0 → (4s4p) 1 P 1 → (4p 2 ) 1 D 2 calcium atomic transition and observed velocity-selective optical pumping in a calcium hollow cathode lamp by means of optogalvanic detection. The optical pum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7604a9c7c57d1ef6fa73397908a27d89
https://doi.org/10.1016/j.optcom.2007.10.041
https://doi.org/10.1016/j.optcom.2007.10.041
Publikováno v:
Frontiers in Optics 2016.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7974ddbe98ab70c8b954f8edbaa7ba4c
https://doi.org/10.1364/fio.2016.jth2a.25
https://doi.org/10.1364/fio.2016.jth2a.25
Autor:
Kevin M. Jones, Stephen Gensemer, Fredrik K. Fatemi, Luís E. E. de Araujo, Jonathan D. Weinstein, Eite Tiesinga, Paul D. Lett
Publikováno v:
The Journal of Chemical Physics. 119:2062-2074
We have performed a type of Autler–Townes spectroscopy to locate a number of rovibrational-hyperfine levels of the a 3Σu+ potential, the lowest triplet potential of the Na2 dimer. The spectroscopy starts with the photoassociation of ultracold atom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14e2bf68f89e270f8213aed6e0e5aab5
https://doi.org/10.1063/1.1585028
https://doi.org/10.1063/1.1585028