Terahertz confocal microscopy with a quantum cascade laser source

De Cumis, R. U Siciliani and Xu, J. H. and Masini, L. and Degl'Innocenti, Riccardo and Pingue, P. and Benedetti, P. A. and Tredicucci, A. and Vitiello, M. S. (2012) Terahertz confocal microscopy with a quantum cascade laser source. In: IRMMW-THz 2012 - 37th International Conference on Infrared, Millimeter, and Terahertz Waves. UNSPECIFIED, AUS. ISBN 9781467315975

Abstract

We report the realization of a confocal THz microscope based on a ∼ 3 THz quantum cascade laser source. A resolution as low as 67 μm is achieved, with a large contrast enhancement allowed by the confocal geometry. The capability of imaging overlayed objects on close-by planes is also demonstrated.