Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Ioannis M. Besieris"'
Autor:
Ioannis M. Besieris, Peeter Saari
Publikováno v:
Photonics, Vol 11, Iss 1, p 94 (2024)
A question of physical importance is whether finite-energy spatiotemporally localized (i.e., pulsed) generalizations of monochromatic accelerating Airy beams are feasible. For luminal solutions, this question has been answered within the framework of
Externí odkaz:
https://doaj.org/article/bcf86538b3ff4c84bf25723eb94e31dd
Autor:
Peeter Saari, Ioannis M. Besieris
Publikováno v:
Foundations. 2:199-208
Vector-valued electromagnetic waves for which the integral of the electric field over time is zero at every location in space were characterized as “usual” by Bessonov several decades ago. Otherwise, they were called “strange”. Recently, Popo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93b071353a28d4d92aa9e1477053087e
https://doi.org/10.3390/foundations2010012
https://doi.org/10.3390/foundations2010012
Autor:
Ioannis M. Besieris
Publikováno v:
Progress In Electromagnetics Research M. 112:55-65
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22ee1191a4c94f7b3b1638e8ef22034
https://doi.org/10.2528/pierm22050907
https://doi.org/10.2528/pierm22050907
Publikováno v:
Progress In Electromagnetics Research M. 102:171-180
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dba1705fd72689c7a7e07ae4448f70a
https://doi.org/10.2528/pierm21040802
https://doi.org/10.2528/pierm21040802
Autor:
Ioannis M. Besieris, Peeter Saari
Publikováno v:
Journal of the Optical Society of America A. 39:1449
Highly focused space-time wavepackets in free space have already been achieved by means of suitable superpositions of nondiffracting and almost undistorted spatiotemporally localized pulses. Here, we present analytically individual autofocusing lumin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eed76cae30870c374e03f0f194da41b8
https://doi.org/10.1364/josaa.462601
https://doi.org/10.1364/josaa.462601
Autor:
Ioannis M. Besieris, Peeter Saari
Publikováno v:
Physical Review A. 101
It is well known that although the group velocity of structured light pulses propagating in vacuum can be subluminal or superluminal, the upper limit of the energy flow velocity is c, the speed of light in vacuum. This inequality can be explained in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d64d46992c40dc7a3f88fa0e8560d205
https://doi.org/10.1103/physreva.101.023812
https://doi.org/10.1103/physreva.101.023812
Publikováno v:
Physical Review A. 100
A universal relation has been established between the local energy transport velocity along the direction of propagation and the group velocity of scalar and vector-valued propagation-invariant spatiotemporally localized superluminal and subluminal e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7763bcaf4b0560b6626f03feac52645d
https://doi.org/10.1103/physreva.100.013849
https://doi.org/10.1103/physreva.100.013849
Autor:
Ioannis M. Besieris, Amr M. Shaarawi
Publikováno v:
2019 URSI International Symposium on Electromagnetic Theory (EMTS).
The Bateman-Whittaker theory, which was developed more than a century ago, is shown to be a comprehensive basis for deriving a large class of null spatiotemporally localized waves characterized by intriguing vorticial structures. In addition, it prov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c44be0bba68c5637120516ea9ede4f3a
https://doi.org/10.23919/ursi-emts.2019.8931506
https://doi.org/10.23919/ursi-emts.2019.8931506
Autor:
Ioannis M. Besieris, Peeter Saari
Publikováno v:
European Journal of Physics. 42:055301
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dd79664ecc34a88cdb998643dd62545
https://doi.org/10.1088/1361-6404/ac0106
https://doi.org/10.1088/1361-6404/ac0106
Publikováno v:
Optics Communications. 369:56-64
Studies have already been made of accelerating Airy beams in the presence of deterministic inhomogeneities, illustrating, in particular, that the inherent self-healing properties of such beams are preserved. The cases of a range-dependent linear tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36eda79e1f83472cdeb1493df5c86f20
https://doi.org/10.1016/j.optcom.2016.02.020
https://doi.org/10.1016/j.optcom.2016.02.020