Tunable narrowband THz generation in orientation patterned gallium phosphide for THz anisotropy identification

摘要

We demonstrate tunable narrowband THz generation by optical rectification of a femtosecond pulse in OrientationPatterned Gallium Phosphide. Center frequencies of 0.9 - 3.8 THz with average power up to 15 μW were achieved usinga 1.064 μm fiber laser for the pump laser. Biomolecular characterization for an early application of this system is alsoshown in this work by anisotropic spectroscopic signature detection of molecular crystals in the THz region.