TY - JOUR
T1 - Far-field measurements of vortex beams interacting with nanoholes
AU - Zambrana-Puyalto, Xavier
AU - Vidal, Xavier
AU - Fernandez-Corbaton, Ivan
AU - Molina-Terriza, Gabriel
PY - 2016/2/25
Y1 - 2016/2/25
N2 - We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γm,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γm,p ratio as compared to those obtained by Gaussian beams.
AB - We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γm,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γm,p ratio as compared to those obtained by Gaussian beams.
UR - https://www.scopus.com/pages/publications/84959450018
U2 - 10.1038/srep22185
DO - 10.1038/srep22185
M3 - Article
AN - SCOPUS:84959450018
SN - 2045-2322
VL - 6
JO - Scientific Reports
JF - Scientific Reports
M1 - 22185
ER -