Frequency locking and monitoring based on bi-directional terahertz radiation of a 3rd-order distributed feedback quantum cascade laser

Beam and phase distributions of a terahertz quantum cascade wire laser

Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator

Frequency and amplitude stabilized terahertz quantum cascade laser as local oscillator

Stabilized HEB-QCL heterodyne spectrometer at super-terahertz

Gas cell measurement using a 2.9 THz heterodyne receiver based on a quantum cascade laser and a superconducting hot electron bolometer

High-resolution heterodyne spectroscopy using a tunable quantum cascade laser around 3.5 THz

3.5 THz surface emitting distributed feedback QCL operated at 70 K as local oscillator

Heterodyne gas cell measurements at 2.9 THz using a quantum cascade laser as local oscillator