Highly efficient THz transient four-wave mixing in doped semiconductors

N. Dessmann,Nguyen H. Le, V Eless,K. Saeedi,S. G. Pavlov,K. L. Litvinenko,H. Riemann,N. Abrosimov,G. Aeppli,B. Redlich,B. Murdin

2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022)（2022）

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Abstract

We present a quantitative study of the efficiency of degenerate THz transient four-wave mixing in germanium doped by shallow impurities using the Dutch free electron laser FELIX. We derive the third order nonlinear sheet susceptibility and find values at low temperature that exceed those of any other material and wavelength range reported to date.

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Key words

germanium doped,shallow impurities,Dutch free electron laser FELIX,order nonlinear sheet susceptibility,four-wave mixing,doped semiconductors

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