Zobrazeno 1 - 10
of 321
pro vyhledávání: '"Gbur Greg"'
Autor:
Song Haoqian, Zhang Runzhou, Hu Nanzhe, Zhou Huibin, Su Xinzhou, Song Hao, Zou Kaiheng, Pang Kai, Liu Cong, Park Daeyoung, Lynn Brittany, Gbur Greg, Dogariu Aristide, Watkins Richard J., Miller Jerome K., Johnson Eric, Tur Moshe, Willner Alan E.
Publikováno v:
Nanophotonics, Vol 11, Iss 4, Pp 885-895 (2021)
When an orbital-angular-momentum (OAM) beam propagates through the dynamic air–water interface, the aerosol above the water and the water surface curvature could induce various degradations (e.g., wavefront distortion, beam wandering, scattering, a
Externí odkaz:
https://doaj.org/article/a7320c1699ea44e89f6c027d8f52ca70
Autor:
Gbur Greg
Publikováno v:
Nanophotonics, Vol 8, Iss 2, Pp 205-225 (2018)
It is now well-appreciated that a bandlimited wave can possess oscillations much more rapidly than those predicted by the bandlimit itself, in a phenomenon known as superoscillation. Such superoscillations are required to be of dramatically smaller a
Externí odkaz:
https://doaj.org/article/f089bb9f266d4f6986f8cd7685510d63
As a vector version of scalar Bessel beams, Poincar\'{e}-Bessel beams (PBBs) have attracted a great deal of attention due to the presence of polarization singularities and their nondiffraction and self-healing properties. Previous studies of PBBs hav
Externí odkaz:
http://arxiv.org/abs/2306.06464
It has long been assumed that there is an intrinsic conflict between optical vortices and partial coherence, in that deterministic phase vortices do not appear in partially coherent fields. We demonstrate, however, that it is possible to construct a
Externí odkaz:
http://arxiv.org/abs/2303.13626
Autor:
Kumar, Subith, Ghosh, Anirban, Kaushik, Chahat, Shiri, Arash, Gbur, Greg, Sharma, Sudhir, Samanta, G. K.
Historically, infinity was long considered a vague concept - boundless, endless, larger than the largest - without any quantifiable mathematical foundation. This view changed in the 1800s through the pioneering work of Georg Cantor showing that infin
Externí odkaz:
http://arxiv.org/abs/2303.11007
Autor:
Korotkova, Olga, Gbur, Greg
Publikováno v:
Phys. Rev. A 103, 023529 (2021)
A matrix representation is introduced for stationary beam-like light fields that allows for simultaneous treatment of the orbital angular momentum (OAM) and the second-order state of spatial coherence. This Coherence-OAM matrix is a counterpart of th
Externí odkaz:
http://arxiv.org/abs/2012.01332
Traditional fractional vortex beams are well-known "jump" beams: that is, their net topological charge jumps by unity as the effective topological charge of the source passes a half-integer value. Here, we propose an anomalous multi-ramp fractional v
Externí odkaz:
http://arxiv.org/abs/2008.09568
Publikováno v:
Phys. Rev. A 102, 063513 (2020)
We demonstrate that the orbital angular momentum flux density of a paraxial light beam can change on propagation in free space. These changes are entirely due to the spatial coherence state of the source, and the effect is analogous to correlation-in
Externí odkaz:
http://arxiv.org/abs/2005.01667