Mid-infrared Fourier-transform infrared (FT-IR) spectroscopy of liquid biological samples is
limited by the high absorption of water in this spectral range, which makes conventional …

Entangled photon pairs are an important resource for many types of quantum protocols.
Semiconductor Bragg-reflection waveguides are a promising photon-pair source due to …

Semiconductor Bragg-reflection waveguides are well-established sources of correlated
photon pairs as well as promising candidates for building up integrated quantum optics …

Bragg reflection waveguides emitting broadband parametric downconversion (PDC) have
been proven to be well suited for the on-chip generation of polarization entanglement in a …

Semiconductor alloys of aluminum gallium arsenide (AlGaAs) exhibit strong second-order
optical nonlinearities. This makes them prime candidates for the integration of devices for …

Compared to traditional non-linear optical crystals, like BaB 2 O 4, KTiOPO 4 or LiNbO 3,
semiconductor integrated sources of photon pairs may operate at pump wavelengths much …

Analyzing the internal loss characteristics and multimodedness of (integrated) optical
devices can prove difficult. One technique to recover this information is to Fourier transform …

Nonlinear frequency conversion is ubiquitous in laser engineering and quantum information
technology. A long-standing goal in photonics is to integrate on-chip semiconductor laser …

We investigate the dispersion properties of ridge Bragg-reflection waveguides to deduce
their phasematching characteristics. These are crucial for exploiting them as sources of …

Bragg-reflection waveguides (BRWs) fabricated from AlGaAs provide an interesting
nonlinear optical platform for photon-pair generation via parametric down-conversion (PDC) …