Any high-contrast imaging instrument in a future large space-based telescope will include an integral field spectrograph (IFS) for measuring broadband starlight residuals and characterizing the exoplanet's atmospheric spectrum. In this paper, we report the development of a high-contrast integral field spectrograph (HCIFS) at Princeton University and demonstrate its application in multi-spectral wavefront control. Moreover, we propose and experimentally validate a new reduced-dimensional system identification algorithm for an IFS imaging system, which improves the system's wavefront control speed, contrast and computational and data storage efficiency.
@article{arxiv.2005.09753,
title = {High-Contrast Integral Field Spectrograph (HCIFS): multi-spectral wavefront control and reduced-dimensional system identification},
author = {He Sun and Alexei Goun and Susan Redmond and Michael Galvin and Tyler Groff and Maxime Rizzo and N. Jeremy Kasdin},
journal= {arXiv preprint arXiv:2005.09753},
year = {2020}
}