Journal
OPTICS EXPRESS
Volume 26, Issue 14, Pages 18423-18435Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.018423
Keywords
-
Categories
Funding
- European Union ERC Consolidator Grant SPRINT
- PON SISTEMA (MIUR)
- EPSRC (UK) [EP/J017671/1, EP/P021859/1]
- Royal Society
- Spanish Ministry of Economy and Competitiveness [MAT2015-65525-R]
- Wolfson Foundation
- EPSRC [EP/J017671/1] Funding Source: UKRI
Ask authors/readers for more resources
At terahertz (THz) frequencies, scattering-type scanning near-field optical microscopy (s-SNOM) based on continuous wave sources mostly relies on cryogenic and bulky detectors, which represents a major constraint for its practical application. Here, we devise a THz s-SNOM system that provides both amplitude and phase contrast and achieves nanoscale (60-70nm) in-plane spatial resolution. It features a quantum cascade laser that simultaneously emits THz frequency light and senses the backscattered optical field through a voltage modulation induced inherently through the self-mixing technique. We demonstrate its performance by probing a phonon-polariton-resonant CsBr crystal and doped black phosphorus flakes. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available