Imaging of Ultra-Confined Phonon Polaritons in Hexagonal Boron Nitride on Gold

• DOI: 10.1364/cleo_qels.2018.fth1k.6
• Publication Date: 2018-05-07T18:16:20Z
• Authors: Antonio Ambrosio; Michele Tamagnone; Kundan Chaudhary; Luis A. Jauregui; Philip Kim; William L. Wilson; Federico Capasso
• Keywords: Hexagonal boron nitride; Infrared microscopy

We investigated infrared phonon polariton on thin hexagonal boron nitride flakes gold. successfully imaged ultraslow guided modes in both restrahlen bands, using photo-induced force microscopy and scattering type near field scanning optical microscopy.