Terahertz-wave generation from periodically-inverted GaP pumped at 1.55 /spl mu/m

This paper demonstrates a THz-wave source employing difference-frequency generation (DFG) pumped at 1.55 /spl mu/m. THz signals are effectively generated by quasi-phase-matching in DFG from a periodically-inverted GaP stack at frequencies of 1 and 2.6 THz.