Differential scanning optical microscopy with a thz quantum cascade laser source

Degl'Innocenti, Riccardo and Kumar, M. and Xu, J. H. and Tredicucci, A. (2010) Differential scanning optical microscopy with a thz quantum cascade laser source. In: IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide. IEEE, ITA. ISBN 9781424466573

Abstract

We present a differential Near-field Scanning Optical Microscope (NSOM) operating with subwavelength resolution in the THz spectral region. The system, which employs a quantum cascade laser emitting at λ=105 μm as source, has been been tested on metal and graphite objects, with a resolution of ∼ λ/10.