TY - JOUR
T1 - Intrinsic formation of electromagnetic divergence and rotation by parabolic focusing
AU - Shibata, Kazunori
AU - Takai, Mayuko
AU - Uemoto, Mitsuharu
AU - Watanabe, Shinichi
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/11/3
Y1 - 2015/11/3
N2 - A linearly polarized electromagnetic wave is found to form divergent and rotation fields after focused by an off-axis parabolic mirror. These distributions are generated within a subwavelength scale around the focus and at times when the electric field at the focus vanishes. We theoretically and experimentally show that not only the direction but also the structure of the distributions varies with the incident polarization. In addition, the distributions move in one direction with a phase velocity faster than the speed of light.
AB - A linearly polarized electromagnetic wave is found to form divergent and rotation fields after focused by an off-axis parabolic mirror. These distributions are generated within a subwavelength scale around the focus and at times when the electric field at the focus vanishes. We theoretically and experimentally show that not only the direction but also the structure of the distributions varies with the incident polarization. In addition, the distributions move in one direction with a phase velocity faster than the speed of light.
UR - http://www.scopus.com/inward/record.url?scp=84946866934&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946866934&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.92.053806
DO - 10.1103/PhysRevA.92.053806
M3 - Article
AN - SCOPUS:84946866934
SN - 1050-2947
VL - 92
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053806
ER -