Master thesis and internship[BR]- Master's thesis : Development of a performance modeling tool for nulling interferometry[BR]- Internship

Abstract

This master’s thesis delves into the field of space nulling interferometry, a promising technique for direct exoplanet detection and characterization. The work begins with an introduction to nulling interferometry, followed by a comprehensive theoretical background that lays the foundation for understanding the principles and limitations of this method. A review of previous space mission concepts, such as the Darwin mission, as well as currently existing ground-based facilities, highlight the advancements and lessons learned in the field throughout the years. This thesis aims in enhancing the understanding and application of nulling interferometry by the development in chapter 4 of an advanced analysis tool to assess interference quality. Coupling the results of the ray-tracing software CodeV and postprocess capabilities of MATLAB, this tool performs detailed tolerancing and sensitivity analysis, essential for optimizing the design and performance of future interferometric instruments. The tool was validated through a series of MonteCarlo simulations in chapter 5 and sensitivity analysis in chapter 6, demonstrating its effectiveness in identifying and mitigating potential sources of error. The results underscore the importance of precise optical design, calibration, and correction mechanisms in achieving high-quality interference. This thesis provides a robust framework for future research and development in nulling interferometry such as precise tolerancing and optimisation of a nulling interferometer optical design, contributing to the ongoing quest for discovering and studying exoplanets.