physics.optics
Highly efficient broadband THz upconversion with Dirac materials
Tatiana A. Uaman Svetikova Igor Ilyakov Alexey Ponomaryov Thales V. A. G. de Oliveira Christian Berger Lena Fürst Florian Bayer Jan-Christoph Deinert Gulloo Lal Prajapati Atiqa Arshad Elena G. Novik Alexej Pashkin Manfred Helm Stephan Winnerl Hartmut Buhmann Laurens W. Molenkamp Tobias Kiessling Sergey Kovalev Georgy V. Astakhov