Comprehensive characterization of terahertz generation with the organic crystal BNA

We characterize the terahertz (THz) generation of N-benzyl-2-methyl-4-nitroaniline (BNA), with crystals ranging in thickness from 123-700 {\mu}m. compare excitation using 800-nm and 1250 to 1500-nm wavelengths. Pumping BNA wavelengths longer near-infrared results a broad spectrum, producing out 6 THz 100-fs pump, provided crystal is thin enough. ~200 {\mu}m or thinner are required produce spectrum an whereas ~300 thick optimal for broadband report favorable optical characteristics our that make them attractive broadband, high-field generation, we also find significant differences reported other works.