Broadband normal-incidence aperiodic multilayer mirrors for soft x-ray dispersive spectroscopy: theory and implementation

Eugene N. Ragozin; Valerii V. Kondratenko; Vladimir E. Levashov; Yurii P. Pershin; Alexander S. Pirozhkov

doi:10.1117/12.451355

24 December 2002 Broadband normal-incidence aperiodic multilayer mirrors for soft X-ray dispersive spectroscopy: theory and implementation

Eugene N. Ragozin, Valerii V. Kondratenko, Vladimir E. Levashov, Yurii P. Pershin, Alexander S. Pirozhkov

Author Affiliations +

Proceedings Volume 4782, X-Ray Mirrors, Crystals, and Multilayers II; (2002) https://doi.org/10.1117/12.451355
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Aperiodic multilayer structures (MSs) show promise as broadband soft X-ray mirrors for stigmatic diffraction spectroscopic instruments. We have derived aperiodic MSs optimized for maximum uniform normal-incidence reflectivity throughout a prescribed wavelength range, e.g., 130 - 190 Å (R=24 %), 125 - 250 Å (16 %), etc. Each of these aperiodic MSs exhibits an unparalleled integral reflectivity which substantially exceeds that of any periodic multilayer mirror pertaining to the corresponding wavelength range. Several Mo/Si aperiodic MSs were synthesized by magnetron sputtering on concave substrates to exhibit a relatively uniform reflectivity of (15 - 11)% in the 125 - 250 Å range, close to the theoretical predictions. These multilayers served as the focusing elements of high-transmission stigmatic transmission grating spectrograph with a plate scale of 20 or 4 Å/mm. The spectrograph was employed to investigate the laser plasma - gas jet interaction and characterize the Xe gas-jet laser-plasma XUV radiation source simultaneously with spatial and spectral resolution in the wavelength range above 124 Å. We have theoretically explored into the reflection of extremely short X-ray pulses by MSs. Special-design aperiodic MSs were shown to possess the unrivaled capacity to reflect few-cycle X-ray pulses ranging into the attoseconds. Aperiodic MSs have been calculated that are capable of reflecting pulses which comprise only three wave periods of an X-ray electromagnetic wave.

Citation Download Citation

Eugene N. Ragozin, Valerii V. Kondratenko, Vladimir E. Levashov, Yurii P. Pershin, and Alexander S. Pirozhkov "Broadband normal-incidence aperiodic multilayer mirrors for soft X-ray dispersive spectroscopy: theory and implementation", Proc. SPIE 4782, X-Ray Mirrors, Crystals, and Multilayers II, (24 December 2002); https://doi.org/10.1117/12.451355

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