摘要
Studies on terahertz（THz）radiation and functiona devices have drawn increasing attention due to their applications in biological imaging and sensing nondestructive evaluation,national security,spectroscopy and high speed communication.Tunable THz sources based on difference frequency or parametric oscillation generation are highly efficient and reliable for these applications
Studies on terahertz（THz）radiation and functiona devices have drawn increasing attention due to their applications in biological imaging and sensing nondestructive evaluation,national security,spectroscopy and high speed communication.Tunable THz sources based on difference frequency or parametric oscillation generation are highly efficient and reliable for these applications
