Generation of terahertz wave at 560 GHz based on photomixing of 560-GHz-spacing soliton microcomb with UTC-PD

Photomixing of internal mode beat in optical comb is a potential method to generate low-phase-noise THz wave for 6G. Here, we generated a 560-GHz CW-THz wave by photomixing of a soliton microcomb generated from a Si 3 N 4 micro-resonator with UTC-PD. We evaluate the phase noise characteristics of generated CW-THz waves.