Overcoming intensity saturation in nonlinear multiple‐quantum‐well metasurfaces for high‐efficiency frequency upconversion Adv. Mat. 35, 2106902 (2023) (2023) N. Nefedkin, A. Mekawy, J. Krakofsky, Y. Wang, A. Belyanin, M. Belkin, and A. Alù Online Ref
Overcoming intensity saturation in nonlinear multiple‐quantum‐well metasurfaces for high‐efficiency frequency upconversion Adv. Mat., 2106902 (2021) N. Nefedkin, A. Mekawy, J. Krakofsky, Y. Wang, A. Belyanin, M. Belkin, A. Alu Online Ref
THz surface emission by difference frequency generation in quantum cascade lasers 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (2017) F. Demmerle, D. Burghart, W. Oberhausen, A. Wolf, G. K. Veerabathran, J. Krakofsky, H. Schmeiduch, G. Boehm, M. C. Amann Online Ref