2013•Unpublished venueRequires access

Longitudinal fields in focused terahertz beams

Stephan Winnerl, Ralf Hubrich, Martin Mittendorff, H. Schneider, M. Helm

Abstract

We measure transverse as well as longitudinal terahertz field components in the focus of both radially and linearly polarized beams. A phase shift of π/2 between the transverse and longitudinal field contributions is found in both cases for all frequency components. Furthermore tighter focusing of the longitudinal components of the radially polarized beam as compared to the transverse components of the linearly polarized beam is demonstrated.

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Available abstract

Key concepts: Transverse plane, Terahertz radiation, Longitudinal field, Optics, Beam (structure), Physics, Focus (optics), Field (mathematics)