Tomografía del módulo y la fase de un haz focalizado de infra-rojo para medidas de caracterización nanofotónica
- Silva López, Manuel
- Rico García, José María
- Alda, Javier
ISSN: 2171-8814
Year of publication: 2012
Issue Title: ESPECIAL OPTOEL´11
Volume: 45
Issue: 2
Pages: 233-237
Type: Article
More publications in: Óptica pura y aplicada
Abstract
The amplitude and phase spatial maps around the focal plane of a laser beam are recovered. Irradiance maps are obtained using a tomographic method based on the knife-edge technique, and the beam phase is obtained by means of an algorithm based on the Irradiance Transport Equation (ITE). Information on the amplitude and phase distribution of an incoming beam is useful for characterization of nanophotonic devices (such as antenna-couple detectors) that are sensitive to these parameters. This method avoids the use of image-forming devices which are not suitable under low spatial resolution conditions.