Author:
Mekhael Madona,Stolt Timo,Vesala Anna,Rekola Heikki,Hakala Tommi K.,Fickler Robert,Huttunen Mikko J.
Abstract
We demonstrate scalable enhancement of second-harmonic generation (SHG) of metasurfaces through multipass cells. We achieve phase matching with superlinear dependence on the number of passes, promising applications in diverse nonlinear optics.