Abstract

A novel and simple soft-x-ray grating-spectrograph design for high-resolution plasma-spectroscopy applications is presented and analyzed. This design uses dual, matched, concave varied-groove-density gratings to provide high dispersion and slit magnification and can achieve a very high spectral resolution (λ/Δλ > 25,000) in an instrument that is less than 1 m in length while using detectors, such as microchannel plates, with relatively coarse spatial resolutions. The advantages of this design over other designs with a comparable spectral resolution include its simplicity and small size, whereas the disadvantages include a narrow useful spectral range (λ/Δλ ≈ 50). Potential applications include x-ray laser linewidth measurements.

© 1995 Optical Society of America

High-resolution tunable spectrograph for x-ray laser linewidth measurements with a plane varied-line-spacing grating

James H. Underwood and Jeffrey A. Koch
Appl. Opt. 36(21) 4913-4921 (1997)

Spatial imaging in the soft x-ray region (20–304 Å) utilizing the astigmatism of a grazing incidence concave grating

Alex Nudelfuden, Raj Solanki, and H. Warren Moos
Appl. Opt. 24(6) 789-792 (1985)

X-ray spectrographs using radial groove gratings

Webster C. Cash
Appl. Opt. 22(24) 3971-3976 (1983)

Stigmatic grazing-incidence flat-field grating spectrograph

Pin-zhong Fan, Zheng-quan Zhang, Jin-zhi Zhou, Ren-shan Jin, Zhi-zhan Xu, and Xu Guo
Appl. Opt. 31(31) 6720-6723 (1992)

Grazing-incidence high-resolution stigmatic spectrograph with two optical elements

A. M. Malvezzi, L. Garifo, and G. Tondello
Appl. Opt. 20(14) 2560-2565 (1981)