講演情報
[14p-K508-7]Sub-THz Signal Generation Device Based on Optical Difference Frequency Generation using LiTaO3 Rectangular Waveguide
〇(D)Ken Paramayudha1, Reiji Hiraga1, Yui Otagaki1, Hiroshi Murata1 (1.Mie Univ.)
キーワード：
difference frequency generation、nonlinear crystal、sub-THz generation based on nonlinear optics
The sub-THz spectrum offers significant potential for advanced applications, such as remote sensing and high-speed wireless communication, creating a need for efficient signal generation methods. In this study, we report on a sub-THz signal generation device that utilizes difference frequency generation (DFG) through nonlinear optical effects, combined with a rectangular waveguide structure. The device is based on a polarization-reversed LiTaO$_3$ crystal and optical waveguides enclosed in metal walls, allowing customized spatial distribution and phase relationship of the induced nonlinear polarization within the crystal. This design enables the selective coupling of optical DFG signals into sub-THz waveguide modes.