Efficient Terahertz Generation via Optical Rectification in Halide Perovskites

THz emission from the all-organic, halide perovskite N-methyl-1,4-diazabicyclo [2.2.2] octan-1-ium (methyl-DABCO) ammonium iodide (MDNI) has been demonstrated for the first time. The generation mechanism was shown to be optical rectification, and a peak field strength of up to 0.8 kV/cm was achieved, demonstrating the promise of this class of materials as efficient THz emitters.