We demonstrate quasi-continuous tuning of the emission frequency from coupled cavity
terahertz frequency quantum cascade lasers. Such coupled cavity lasers comprise a lasing …

Frequency tuning in terahertz frequency quantum cascade lasers is challenging because of
low thermal and current tuning coefficients. Moreover, photonic designs like Vernier …

A holographically designed, aperiodic distributed feedback grating is used as a multi-
resonance filter and embedded within an existing Fabry-Pérot (FP) terahertz (THz) quantum …

We report on the effect of finite-defect-site photonic lattices (PLs) on the spectral emission of
terahertz frequency quantum cascade lasers, both theoretically and experimentally. A …

Longitudinal computer-generated holograms (LCGHs) can be used for the inverse design of
aperiodic photonic lattices for customizable frequency control of light propagation. A one …

Single-mode operation of distributed feedback (DFB) terahertz quantum cascade lasers
based on metal-stripe surface grating structure is reported. Strong DFB coupling and low …

Focussed ion beam milling can be used to introduce aperiodic distributed feedback (ADFB)
gratings into fully packaged, operational terahertz (THZ) quantum cascade lasers to achieve …

Aperiodic lattices are a promising route to achieving tunable or multi-frequency lasing, but
their threshold spectrum remains largely unstudied. We find that holographically designed …

Short, holographically designed, aperiodic distributed feedback (ADFB) gratings are able to
provide multi-band spectral filtering over arbitrarily wide bandwidths, offering a …

We present a perturbative aperiodic distributed feedback grating embedded within a Fabry-
Pérot cavity. Time domain modelling revealed electronic switching functionality, occurring …