Novel phase change materials to achieve reconfigurable flat optics

Introduction
Flat optics has the potential to replace bulky optical systems with mass manufacturable devices, often with unprecedented functionalities. This has been demonstrated for many applications such as for functionalization of light sources, post-processing of imagers, and the realization of true MR/AR displays. However, the ultimate challenge is to make these flat optic surfaces reconfigurable. This would allow to vary or optimize the functionality of the flat optic devices during operation, which would result in a paradigm shift in display and light project technology. Although some tunable and/or reconfigurable flat optic devices have already been made, the ultimate device is yet to be demonstrated for visible light.

Topic
The project goal is to design and fabricate a reconfigurable flat optic device for visible light.

To achieve this goal the project will include a systematic study of new phase change materials, that are suitable for visible light, to make novel reconfigurable flat optic devices. Among others, the phase change behavior and optical performance will have to be studied as function of the fabrication conditions. A suitable device stack will have to designed to achieve an optical reconfigurable demonstrator. Depending on the performance of the device the demonstrator could be a reconfigurable lens, spatial light modulator, tunable color filter, etc.

This PhD project combines optical design, material characterization and device characterization.

The candidate

You are a highly motivated student, with background in nano-engineering, physics, material science, electrical engineering, or related. You have an interest in nanofabrication and flat optics applications, both from design and characterization side. It is expected that you will present results regularly. You are a team player and have good communication skills as you will work in a multidisciplinary and multicultural team spanning several imec departments. Given the international character of imec, an excellent knowledge of English is a must.