All Categories (1-3 of 3)

1. Quantum Dot based Photonic Devices

   01 Apr 2012 | | Contributor(s):: Muhammad Usman

   Deployment of nanometer-sized semiconductor quantum dots (QDs) in the active region ofphotonic devices such as lasers, semiconductor optical amplifiers (SOA's), photo-detectors etc.for the next generation communication systems offers unique characteristics such astemperature-insensitivity, high...

2. Polarization Response of Multi-layer InAs Quantum Dot Stacks

   25 Oct 2011 | | Contributor(s):: Muhammad Usman

   Recent experimental measurements, without any theoretical guidance, showed that isotropic polarization response can be achieved by increasing the number of QD layers in a QD stack. In this work, we analyse the polarization response of multi-layer quantum dot stacks containing up to nine quantum...

3. Quantitative Modeling and Simulation of Quantum Dots

   18 Apr 2011 | | Contributor(s):: Muhammad Usman

   Quantum dots grown by self-assembly process are typically constructed by 50,000 to 5,000,000 structural atoms which confine a small, countable number of extra electrons or holes in a space that is comparable in size to the electron wavelength. Under such conditions quantum dots can be interpreted...