In research and engineering, short laser pulses are fundamental for metrology and
communication. The generation of pulses by passive mode-locking is especially desirable …

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 a full-wave Maxwell-density matrix simulation tool including c-number stochastic
noise terms for the modeling of the spatiotemporal dynamics in active photonic devices …

Optical frequency comb (OFC) emission in quantum cascade lasers (QCLs) is highly
attractive for applications in metrology and sensing. Recently, coherent OFC mode-locking …

We demonstrate a full-wave numerical Maxwell-Bloch simulation tool including perfectly
matched layer (PML) absorbing boundary conditions. To avoid detrimental reflection errors …

Perfectly matched layer (PML) boundary conditions have been used for several decades for
the simulation of open domains within the finite difference time domain (FDTD) method. In …

Coupled Maxwell-density matrix equations are widely used for the modeling of quantum
optoelectronic devices, such as quantum cascade and quantum dot lasers. We discuss …

The quantum cascade laser (QCL), operating as an optical frequency comb, is highly
attractive for applications in metrology and sensing. Recently, the generation of coherent …

Quantum cascade lasers (QCLs) are relatively novel sources of mid-infrared and terahertz
radiation. In their envisaged applications advanced operating modes, such as frequency …