Hollow metal waveguides based on fiber optic apparatus and method for enhancing the terahertz wave signals

The present invention relates to a hollow metal waveguide fiber species based apparatus and method for enhancing the terahertz wave signal, using sub-bundle pieces simple means, a plane mirror, beam combiner sheet, mechanically adjustable delay system, so that the sheet is separated via a beam two beams of 800 nm wavelength light generating a predetermined phase delay time, the hollow metal waveguides converge at a common optical fiber, and successively with 400 nm wavelength of the light pulse coincides with the nonlinear effect occurs within the optical fiber ionized gas, generates a terahertz wave; using hollow metal waveguide gathering the total reflection characteristics of the fiber and the optical wave propagating terahertz generated. When a large amount of air to avoid moisture absorption terahertz wave, a terahertz wave to improve the energy loss, the drawing method to overcome the air terahertz wave is generated, two beams of different wavelengths of light occurs in the nonlinear interaction time is too short, the conversion efficiency is not high terahertz problem , effectively enhance the strength of the terahertz wave signal 3 times, and the present invention is easy to operate, low cost.