High efficiency transmission grating for the ESO CUBES UV spectrograph

Autor:	Uwe D. Zeitner, Hans Dekker, Frank Burmeister, Thomas Flügel-Paul, Andrea Bianco, Alessio Zanutta
Přispěvatelé:	Publica
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Direct write electron-beam lithography Space and Planetary Science Ultra-violet Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Astronomy and Astrophysics Transmission grating Astrophysics - Instrumentation and Methods for Astrophysics Surface relief grating
Popis:	CUBES is the Cassegrain U-Band Efficient Spectrograph, a high-efficiency instrument operating in the UV spectral range between 300nm and 400nm with a resolution not less than 20000. CUBES is to be installed at a Cassegrain focus of the Very Large Telescope of the European Southern Observatory. The paper briefly reviews various types of devices used as dispersing elements in astronomical spectrographs to achieve high resolution, before identifying binary transmission gratings produced by microlithography as the best candidate technology for the CUBES instrument. We describe the lithographic fabrication technology in general, two different design considerations to achieve the required high-resolution transmission grating, its prototyping by a direct-write lithographic fabrication technology, and the characterization of the achieved optical performance. An outlook to the realization of the grating for the final instrument, taking the most recent developments of lithographic writing capabilities into consideration is given. Comment: Exp Astron (2022)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2eb820661aed034d5c17877ef41790 http://arxiv.org/abs/2203.15637 Zobrazit plný text záznamu