High spectral purity solid-state dual-frequency laser for the generation of ultra-low phase noise millimeter-wave to terahertz CW signals

We present our latest results related to the development of solid-state dual-frequency lasers for the generation of stable, ultra-low phase noise millimeter-wave and terahertz signals. After presenting the architecture of such lasers delivering sub-Hz Lorentzian linewidth signals, and their stabilization setups based on electro-optical frequency division, we describe the specific setup that we have assembled to further study the origin of the optical and beatnote phase noise. It includes a specific laser setup and a custom-made optical phase noise test bench. Preliminary results are presented, and perspectives are discussed.