"Take a picture of a car with its headlights on. If the car is too far away from you, you will not be able to distinguish the left headlight from the right. Thus, your camera will have reached its resolution limit: it will not be able to clearly image certain details of the object taken in the picture. My research project aims at developing a photographic system reaching the most optimal resolution possible. Contrary to your camera which works with visible light, I instead use terahertz light. A bit like the waves of your microwave oven or those emitted by your cell phone, terahertz waves are invisible to us. To optimize the performance of my photographic device, I manipulate the light illuminating the object, like a puppeteer practicing shadow play. My research seeks to illuinate the invisible!