@inproceedings{a5e2b045bef44501a9be26aeb418343c,
title = "Technical requirements and optical design of the Hi-5 spectrometer",
abstract = "Hi-5 is a proposed L' band high-contrast nulling interferometric instrument for the visitor focus of the Very Large Telescope Interferometer (VLTI). As a part of the ERC consolidator project called SCIFY (Self-Calibrated Interferometry For exoplanet spectroscopY), the instrument aims to achieve sufficient dynamic range and angular resolution to directly image and characterize the snow line of young extra-solar planetary systems. The spectrometer is based on a dispersive grism and is located downstream of an integrated optics beam-combiner. To reach the contrast and sensitivity specifications, the outputs of the I/O chip must be sufficiently separated and properly sampled on the Hawaii-2RG detector. This has many implications for the photonic chip and spectrometer design. We present these technical requirements, trade-off studies, and phase-A of the optical design of the Hi-5 spectrometer in this paper. For both science and contract-driven reasons, the instrument design currently features three different spectroscopic modes (R=20, 400, and 2000). Designs and efficiency estimates for the grisms are also presented as well as the strategy to separate the two polarization states.",
author = "C. Dandumont and A. Mazzoli and Victor Laborde and Romain Laugier and A. Bigioli and G. Garreau and S. Gross and M. Ireland and J.J.D. Loicq and {More Authors}",
year = "2022",
doi = "10.1117/12.2627939",
language = "English",
volume = "12183",
series = "Proceedings of SPIE",
publisher = "SPIE",
editor = "M{\'e}rand, {Antoine } and Sallum, {Stephanie } and Sanchez-Bermudezv, {Joel }",
booktitle = "Optical and Infrared Interferometry and Imaging VIII",
address = "United States",
note = "SPIE Astronomical Telescopes + Instrumentation 2022 ; Conference date: 17-07-2022 Through 22-07-2022",
}