Quantum cascade lasers are compact devices based on mature compound semiconductors
such as GaAs that take advantage of highly developed optoelectronic fabrication techniques …

Stable terahertz sources are required to advance high-precision terahertz applications such
as molecular spectroscopy, terahertz radars, and wireless communications. Here, we …

Mode-locked femtosecond lasers have revolutionized the field of optical metrology by
allowing the realization of ultra-stable phase-coherent links between the optical-frequency …

We report a metrological-grade THz spectroscopy based on the combination of a THz
frequency-comb synthesizer (FCS) and a THz quantum cascade laser (QCL). The QCL …

Two techniques for terahertz (THz) frequency metrology based on frequency comb, namely,
a THz-comb-referenced spectrum analyzer and a continuously tunable, single-frequency …

A single, free-running, dual-wavelength mode-locked, erbium-doped fibre laser was
exploited to measure the absolute frequency of continuous-wave terahertz (CW-THz) …

Dual terahertz (THz) comb spectroscopy enables high spectral resolution, high spectral
accuracy, and broad spectral coverage; however, the requirement for dual stabilized …

Terahertz (THz) dual comb spectroscopy (DCS) is a promising method for high-accuracy,
high-resolution, broadband THz spectroscopy because the mode-resolved THz comb …

We propose a fiber-based, terahertz-comb-referenced spectrum analyzer which has the
advantages of being a portable, alignment-free, robust, and flexible apparatus suitable for …

We present an ultra-broadband and inexpensive photonic spectrum analyzer (PSA) for
wireless signals with a frequency coverage from the microwave range till deep into the …