Terahertz-Wave Phase Modulation Enabled by Optical Interferometric Phase Stabilization

High-frequency carriers have been widely used in recent wireless communication. To comply with this situation, a phase-stable wave carrier generation is an essential technology. We devised a phase stabilization system for photomixing-based THz wave phase modulation with an inverse pilot lightwave. A stable 300-GHz phase modulated wave was successfully generated and transmitted, testifying to the effectiveness of the proposed system.