Research on organic waveguide device for new terahertz-wave emitter

采用溶剂蒸发法生长了厚度为60 μ m的有机非线性光学晶体DASC。用反应离子刻蚀和紫外激光将晶体加工成波导芯。采用紫外光固化环氧树脂作为包覆材料.利用这些技术实现了亚波长尺寸的太赫兹（1THz=300μm）波导。该装置利用两束不同波长的红外激光进行差频混频，输出THz信号。

Thin-plate organic nonlinear optical crystal DASC with 60-μmthickness was grown by solvent evaporation method. Reactive ion etching and ultraviolet laser processed the crystal into a shape of waveguide core. UV -curable epoxy resin was employed as a clad material. Sub-wavelength size waveguide for terahertz radiation (1THz=300μm) was realized by these techniques. The device emitted THz signal based ondifference-frequency mixing from two different-wavelength infrared laser inputs.