Multi-Wavelength Terahertz Parametric Generator Using a Seed Laser Based on Four-Wave Mixing

In this study, we developed a multi-wavelength terahertz-wave parametric generator that operates with only one injection seeding laser. Tunable lasers used as an seeder must be single-frequency oscillators, and conventional requires basically the same number of wavelengths. order to solve problem, new external cavity semiconductor laser incorporates DMD in its wavelength-selective mechanism. process, stable oscillation from single was made possible by efficiently causing four-wave mixing. This seed can applied practical real-time terahertz spectroscopy arbitrarily switching desired wavelength generated interval between multiple