A filter free dual transmission grating spectrometer for the extreme-ultraviolet

Seth R. Wieman; Leonid V. Didkovsky; Darrell L. Judge; Andrew R. Jones; Matthew Harmon

doi:10.1117/12.732953

20 September 2007 A filter free dual transmission grating spectrometer for the extreme-ultraviolet

Seth R. Wieman, Leonid V. Didkovsky, Darrell L. Judge, Andrew R. Jones, Matthew Harmon

Proceedings Volume 6689, Solar Physics and Space Weather Instrumentation II; 66890R (2007) https://doi.org/10.1117/12.732953
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

We report the design and laboratory testing of a prototype dual-grating filter-free extreme ultraviolet (EUV) spectrometer that has potential as a highly stable instrument for measuring absolute solar irradiance in the X-ray through far ultraviolet spectral range. The instrument is based on the same freestanding transmission gratings and silicon photodiodes used on the successful Solar EUV Monitor (SEM) aboard SOHO and the EUV Spectrophotometer (ESP) part of the EVE instrument suite to be flown on SDO. Its two gratings, placed in series, along with a simple baffle structure provide excellent out of band "white" light rejection. Because the instrument does not use any thin film filters or reflective optics it is not susceptible to the degradation and instability associated with such optical elements. We present photometric efficiency data from laboratory tests with a Helium and Hydrogen discharge light source and measurements of "white" light rejection taken using the Mt Wilson Observatory 60' solar telescope.

Citation Download Citation

Seth R. Wieman, Leonid V. Didkovsky, Darrell L. Judge, Andrew R. Jones, and Matthew Harmon "A filter free dual transmission grating spectrometer for the extreme-ultraviolet", Proc. SPIE 6689, Solar Physics and Space Weather Instrumentation II, 66890R (20 September 2007); https://doi.org/10.1117/12.732953

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