Third and fifth order nonlinear susceptibilities in thin HfO₂ layers

authored by

David Zuber, Sven Kleinert, Ayhan Tajalli, Morten Steinecke, Marco Jupé, Ihar Babushkin, Detlev Ristau, Uwe Morgner

Abstract

Third harmonic generation (THG) from dielectric layers is investigated. By forming a thin gradient of HfO₂ with continuously increasing thickness, we are able to study this process in detail. This technique allows us to elucidate the influence of the substrate and to quantify the layered materials third χ⁽3⁾(3ω: ω, ω, ω) and even fifth order χ⁽5⁾(3ω: ω, ω, ω, ω, − ω) nonlinear susceptibility at the fundamental wavelength of 1030 nm. This is to the best of our knowledge the first measurement of the fifth order nonlinear susceptibility in thin dielectric layers.

Organisation(s)

PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
Institute of Quantum Optics

External Organisation(s)

Deutsches Elektronen-Synchrotron (DESY)
Laser Zentrum Hannover e.V. (LZH)
Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy im Forschungsbund Berlin e.V. (MBI)

Type

Article

Journal

Optics express

Volume

31

Pages

19309-19318

No. of pages

10

ISSN

1094-4087

Publication date

05.06.2023

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.1364/OE.486072 (Access: Open)