Terahertz quantum cascade laser (QCL) sources based on intra-cavity difference frequency
generation are currently the only electrically pumped monolithic semiconductor light sources …

Terahertz (THz) quantum cascade lasers (QCLs) are semiconductor-based electrically
pumped laser sources that are based on electron transitions between the subbands in the …

The terahertz spectral range (λ= 30–300 µm) has long been devoid of compact, electrically
pumped, room-temperature semiconductor sources,,,. Despite recent progress with terahertz …

The terahertz region is of great importance for spectroscopy since many molecules have
absorption fingerprints there. Frequency combs based on terahertz quantum cascade lasers …

Portable terahertz (THz) frequency comb sources are highly desired for applications in
rotational molecular spectroscopy and sensing. To date, direct THz quantum cascade laser …

We present ultra-broadband room temperature monolithic terahertz quantum cascade laser
(QCL) sources based on intra-cavity difference frequency generation, emitting continuously …

Terahertz sources based on intracavity difference-frequency generation in mid-infrared
quantum cascade lasers (THz DFG-QCLs) have recently emerged as the first monolithic …

Terahertz (THz) quantum cascade laser (QCL) is an electrically pumped unipolar photonic
device in which light emission takes place due to electronic transitions between subbands …

Terahertz quantum cascade laser sources based on intra-cavity frequency mixing are
currently the only monolithic electrically pumped semiconductor devices that can operate in …

This topical review presents an overview on novel concepts for light emitting diodes (LEDs)
and lasers for the near infrared to the THz regime. GaSb-based quantum well lasers are …