A simple XUV transmission grating spectrograph with sub-ångström resolution for laser-plasma interaction studies

A simple XUV transmission grating spectrograph operating in the wavelength range 3-90 A with sub-angstrom resolution without using any XUV imaging optics is described. This is based on a free-standing gold microstructure grating of 2000 A period in normal incidence geometry. A spectral resolution of...

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Bibliographic Details
Published in:Measurement science & technology 1998-09, Vol.9 (9), p.1462-1468
Main Authors: Sailaja, S, Arora, V, Kumbhare, S R, Naik, P A, Gupta, P D, Fedin, D A, Rupasov, A A, Shikanov, A S
Format: Article
Language:English
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Summary:A simple XUV transmission grating spectrograph operating in the wavelength range 3-90 A with sub-angstrom resolution without using any XUV imaging optics is described. This is based on a free-standing gold microstructure grating of 2000 A period in normal incidence geometry. A spectral resolution of 0.6 A is obtained by optimizing the slit aperture, the source-to-grating distance and the grating-to-detector distance. Electron temperatures deduced from analysis of the spectrum of a laser-produced magnesium plasma are consistent with theoretical considerations. The simple geometry and ease of operation of the spectrograph should make it useful in many experiments such as those involving plasma-based XUV lasers and odd-harmonic generation in the XUV spectral region using ultrashort laser pulses. (Original abstract - amended)
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/9/9/015