Photonics West 2021: high power ultrafast lasers â quo vadis? 11 Mar 2021 Talk considers challenges in power scaling ultrafast sources; state of the art in thin disk multipass lasers, and their future. Dr. Marwan Abdou Ahmed from U Stuttgart IFSW.Mondayâs LASE Hot Topics presentation by Dr. Marwan Abdou Ahmed, of the University of Stuttgart, Germany, focused on high-power ultrafast lasers. His talk was enigmatically titled âDevelopment of high power ultrafast lasers: Quo vadis?â He considered the challenges in power scaling of ultrafast lasers, the state of the art in high power thin disk multipass lasers, and the future of ultrafast lasers with examples from various industrial sources.