Broadband vibrational sum-frequency generation spectrometer at 100 kHz in the 950-1750 cm${}^{-1}$ spectral range utilizing a LiGaS${}_2$ optical parametric amplifier

Zsuzsanna Heiner, Li Wang, Valentin Petrov +1

We present a 100 kHz broadband vibrational sum-frequency generation (VSFG) spectrometer operating in the 5.5-10.5 $\mu$m (950-1750 cm${}^{-1}$) wavelength range. The mid-infrared beam…