Towards intersubband polariton lasing

This work of thesis will be a theoretical and experimental investigation of the properties of intersubband polaritons. After a brief introduction to explain some general aspects of the intersubband polariton generation we will describe an experimental campaign with the aim to verify the possibility to create a polariton laser. The emission of light from a polaritonic state lacks of a clear experimental verification, therefore this experiment may be the first observation of a polariton laser. Then we will describe some improvements that can be employed in order to increase the efficiency of the polariton generation. In particular we will describe how to increase the quality factor of the resonance by means of simulations. The possibility to use graphene to design a better optical resonance will be largely discussed. In the end we will illustrate a concept to manipulate the light with 3D printed windows; the final objective being the design of windows able to remove aberration from laser source.