3D-M3: high-spatial-resolution spectroscopy with extreme AO and 3D-printed micro-lenslets

2021/05/18 by Theodoros Anagnos, Mareike Trappen, Blaise C. Kuo Tiong +20
Engineering · Physics and Astronomy · #Adaptive optics #Adaptive optics and wavefront sensing #Advanced optical system design #Astronomy and Astrophysical Research #Diffraction #Field (mathematics) #Integral field spectrograph #Spectrograph #Spectroscopy #Subaru Telescope #Telescope #Wavelength #astro-ph.IM

paper · pdf · doi:10.1364/ao.420855

openalex publication_date 2021/05/18 · openalex created_date 2021/05/24 · arxiv created 2021/06/14 · arxiv updated 2021/06/15 · openalex updated_date 2026/08/06

Abstract

By combining integral field spectroscopy with extreme adaptive optics, we are now able to resolve objects close to the diffraction limit of large telescopes, exploring new science cases. We introduce an integral field unit designed to couple light with a minimal plate scale from the SCExAO facility at NIR wavelengths to a single-mode spectrograph. The integral field unit has a 3D-printed micro-lens array on top of a custom single-mode multi-core fiber, to optimize the coupling of light into the fiber cores. We demonstrate the potential of the instrument via initial results from the first on-sky runs at the 8.2 m Subaru Telescope with a spectrograph using off-the-shelf optics, allowing for rapid development with low cost.

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