Patent ID: 7400660
Filing Date: 2008-07-15
Classification: G02F,H01S

Abstract:
1. A terahertz wave generation system, comprising: a two-wavelength oscillation laser device capable of simultaneously oscillating laser light having two wavelengths and varying the wavelengths; a λ/2 plate that adjusts polarization of said laser light having two wavelengths, which has been output from said two-wavelength oscillation laser device; a fiber coupler for introducing said laser light having two wavelengths, which has been output from said λ/2 plate and whose polarization has been adjusted, to an optical fiber; said optical fiber where said fiber coupler is disposed to one end portion and a frequency converter is disposed to another end portion, and which transmits said laser light having two wavelengths whose polarization has been adjusted, which has been introduced via said fiber coupler, to said frequency converter; said frequency converter that generates terahertz wave by difference frequency generation using said laser light having two wavelengths whose polarization has been adjusted, which has been transmitted from said optical fiber; a scatter for separating the terahertz wave from light output from said frequency converter; and a condenser lens that condenses the terahertz wave separated by said scatter.