RT Journal Article
T1 Experimental estimation of the longitudinal component of a highly focused electromagnetic field
A1 Maluenda, David
A1 Avinoa, Marcos
A1 Ahmadi, Kavan
A1 Martínez Herrero, María Rosario
A1 Carnicer, Artur
AB The detection of the longitudinal component of a highly focused electromagnetic beam is not a simple task. Although in recent years several methods have been reported in the literature, this measure is still not routinely performed. This paper describes a method that allows us to estimate and visualize the longitudinal component of the field in a relatively simple way. First, we measure the transverse components of the focused field in several planes normal to the optical axis. Then, we determine the complex amplitude of the two transverse field components: the phase is obtained using a phase recovery algorithm, while the phase difference between the two components is determined from the Stokes parameters. Finally, the longitudinal component is estimated using the Gauss's theorem. Experimental results show an excellent agreement with theoretical predictions.
PB Nature publishing group
SN 2045-2322
YR 2021
FD 2021-09-09
LK https://hdl.handle.net/20.500.14352/4480
UL https://hdl.handle.net/20.500.14352/4480
LA eng
NO © The Author(s) 2021.Agencia Estatal de Investigación (PID2019-104268GB-C22 / AEI / 10.13039/501100011033, PID2019-104268GBC21/ AEI / 10.13039/501100011033).
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 21 abr 2025