2 papers
cond-mat.mtrl-sci2022
Spectral narrowing of a phonon resonance in time-domain sum-frequency spectroscopy
Riko Kiessling, Martin Wolf, Alexander Paarmann
Sum-frequency generation (SFG) spectroscopy provides a versatile method for the investigation of non-centrosymmetric media and interfaces. Here, using tunable picosecond infrared (…
physics.optics2019
Surface phonon polariton resonance imaging using long-wave infrared-visible sum-frequency generation microscopy
Riko Kiessling, Yujin Tong, Alexander J. Giles +5
We experimentally demonstrate long-wave infrared-visible sum-frequency generation microscopy for imaging polaritonic resonances of infrared (IR) nanophotonic structures. This nonli…