Improved Performance of Frequency Tripling Mirrors: A Promising Approach for Simple and Efficient Third Harmonic Generation.

Frequency tripling mirrors offer a promising alternative to complicated cas- caded arrangements for third harmonic generation. By incorporating optimised dielectric layers, we have achieved a remarkable conversion efficiency of 3.5 %. We will give a deep insight into FTMs and discuss applications. © 2024 The Author(s) [ABSTRACT FROM AUTHOR]