We design, fabricate and characterize semiconductor optical devices. This could be new lasers, waveguide devices or detectors. Examples are Photonic Crystal waveguides, filters and lasers, Semiconductor Optical Amplifier / Electroabsorber based devices for slow light, optical regeneration or mode-locked (pulsed) lasers or Vertical Cavity Surface Emitting Laser based sensors.
The Functionality of Materials
Photonic crystals, quantum dots, (ultrafast) dynamics and/or photonic integration are key elements in most projects. We study materials and devices on both a basic level and for applications to increase our understanding of their functionality. The main goal of the work is to achieve new or improved functionality though material and device engineering.
Fabrication technology is essential to realizing nanophotonic devices and it is done in the DTU-Danchip (www.danchip.dtu.dk) cleanroom where we have access to a full silicon and III-V process line including MOVPE crystal growth (InAlGaAsP), PECVD, e-beam writing, dry etching, metallization and structural analysis. We also have test stations for characterizing waveguide and surface emitting components including setups for advanced noise and pulse characterization of mode-locked lasers.