Fig. 6: Spectral redshifting at high pump intensities.
From: Highly scalable multicycle THz production with a homemade periodically poled macrocrystal
Spectra of the infrared pump (IR) without (red) and with the wafers (blue) is shown; the center-of-mass shifts from 808 to 858 nm. The experimental conditions here were different from the previous figures: the negative lens was removed to reduce the beam size at the wafers which increased the intensity.
