2 papers
physics.optics2019
Measuring valley polarization in two-dimensional materials with second-harmonic spectroscopy
Yi Wei Ho, Henrique Guimarães Rosa, Ivan Verzhbitskiy +6
A population imbalance at different valleys of an electronic system lowers its effective rotational symmetry. We introduce a technique to measure such imbalance - a valley polariza…
physics.optics2018
Characterization of the second- and third-harmonic optical susceptibilities of atomically thin tungsten diselenide
Henrique G. Rosa, Ho Yi Wei, Ivan Verzhbitskiy +6
We report the first detailed characterization of the sheet third-harmonic optical susceptibility, , of tungsten diselenide (WSe). With a home-built confocal micr…