6000-g/mm holographic flight gratings for the high-resolution Far Ultraviolet Spectroscopic Explorer: efficiency, resolution, and stray light measurements

Robert Grange; Veronique Dauer; Michel Saisse; Michel Neviere; Jean Flamand; Francis Bonnemason

doi:10.1117/12.323405

24 September 1998 6000-g/mm holographic flight gratings for the high-resolution Far Ultraviolet Spectroscopic Explorer: efficiency, resolution, and stray light measurements

Robert Grange, Veronique Dauer, Michel Saisse, Michel Neviere, Jean Flamand, Francis Bonnemason

Author Affiliations +

Proceedings Volume 3450, Theory and Practice of Surface-Relief Diffraction Gratings: Synchrotron and Other Applications; (1998) https://doi.org/10.1117/12.323405
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

In the context of the NASA Far Ultraviolet Spectroscopic Explorer (FUSE) mission, the Laboratoire d'Astronomie Spatiale (LAS) has been in charge of designing and testing the six flight gratings of the spectrograph. The FUSE experiment is dedicated to the spectroscopic study of the 900 - 1200 angstroms range with a 100 cm² equivalent surface and a resolution power of 30,000. These requirements yielded to especially challenging gratings with both very high groove density (6000 g/mm) and large size (300*300 mm²). The aberrations have been corrected using a new recording geometry proposed by LAS. After recalling this new recording setup, we will describe the optical performances (resolution, efficiency, stray light) of the six flight gratings manufactured by Jobin-Yvon company. In particular, we will show that the groove efficiency has reached a value of 38% at 1048 angstroms that is 80% of the theoretical value. Efficiency improvement is still possible using ion- etching technique to modify the groove profile.

Citation Download Citation

Robert Grange, Veronique Dauer, Michel Saisse, Michel Neviere, Jean Flamand, and Francis Bonnemason "6000-g/mm holographic flight gratings for the high-resolution Far Ultraviolet Spectroscopic Explorer: efficiency, resolution, and stray light measurements", Proc. SPIE 3450, Theory and Practice of Surface-Relief Diffraction Gratings: Synchrotron and Other Applications, (24 September 1998); https://doi.org/10.1117/12.323405

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available