An integrated HEB mixer in a cryostat with a cryogenic LO at 2-THz band

We are developing a hot electron bolometer mixer (HEBM) at 2 THz for the atmospheric observations. We demonstrated an integrated HEB mixer in a cryostat with a cryogenic local oscillator (LO). An alignment of the LO into an HEB mixer was made using a cryogenic rotator. We have detected a beat note using this receiver system at 2 THz.