Public defence in Micro- and nanosciences, M.Sc. Vincent Pelgrin

The title of the thesis: Integrated nonlinear optics with hybrid Integration of 2D materials

Doctoral student: Vincent Pelgrin
Opponents: 
Prof. Jorik van de Groep, University of Amsterdam, The Netherlands
Dr. Hao Hu, DTU, Denmark
Custos: Prof. Zhipei Sun, Aalto University School of Electrical Engineering, Department of Electronics and Nanoengineering

In the study titled "Integrated Nonlinear Optics with Hybrid Integration of 2D Material" researcher Vincent Pelgrin aims to advance integrated nonlinear optical functions by integrating highly nonlinear 2D materials with cutting-edge CMOS-compatible waveguides. The project's primary objectives were to demonstrate method efficiency and to establish clear optimization guidelines. This breakthrough holds the potential to usher in a new era of highly efficient nonlinear optical functions, essential for the development of all-optical integrated devices. 

The research successfully achieved experimental proof of concept, expanding existing knowledge on 2D material applications in this context. Additionally, numerical tools were developed to streamline the investigation and study of these hybrid waveguides, encompassing 2D materials and facilitating experimental result analysis. The project explored three key strategies: Firstly, by enhancing waveguide cross-section to maximize interaction between the propagating mode and 2D material. Secondly, by investigating integrated ring resonators to improve the temporal interaction between light and material through the cavity feedback effect. Thirdly, by pioneering methods for deterministic transfer of large area 2D materials. 

These tools and strategies form a robust foundation for an industry-compatible process to create integrated nonlinear optical functions. The established design guidelines and new integration methods hold tremendous promise and are poised to yield impressive demonstrations in the coming years. The hybrid integration of 2D materials has demonstrated its potential to enhance CMOS-compatible integrated optics platforms, potentially revolutionizing the field of integrated nonlinear optics. The diverse findings from this PhD program underscore significant potential for advancement, potentially serving as a catalyst for a transformative shift in integrated nonlinear optics.

Thesis available for public display 10 days prior to the defence at: https://aaltodoc.aalto.fi/doc_public/eonly/riiputus/

Contact information:

See also:

Doctoral theses in the School of Electrical Engineering: https://aaltodoc.aalto.fi/handle/123456789/53
Zoom Quick Guide: https://www.aalto.fi/en/services/zoom-quick-guide