Supervisors:
Yi Yu (yiyu@fotonik.dtu.dk)
Kristoffer S. Mathiesen (krsma@fotonik.dtu.dk)
Jesper Mørk (jesm@fotonik.dtu.dk) building 345A/272, tel. 45 25 63 79
In this project you will experimentally investigate the properties of photonic crystal nanolasers. Photonic crystal lasers are ultra-small lasers where the laser cavity is made using photonic crystal bandgap effects, see Fig. 1. The active material of the lasers is composed of semiconductor quantum dots or quantum wells. Such lasers can only be fabricated in a few labs in the world and we are carrying out research to understand their fundamental properties. This includes characterization of the properties of the emitted light (see Fig. 2), the dynamics of the lasers and the quantum noise.
In this project you will learn
- … the basic principles of semiconductor lasers
- … how a photonic crystal cavity can be used to make an ultra-small laser cavity
- … how to experimentally characterize the threshold and the optical spectrum of the laser
- ….how to analyze and interpret the measurement data
After learning the basics, we will together identify a specific topic close to our research, where you will do a more detailed investigation. This could for instance be to extend the experiments or to develop / apply theory to explain the measured data
A photonic crystal laser.