High efficiency x-ray nanofocusing by the blazed stacking of binary zone plates

I. Mohacsi; P. Karvinen; I. Vartiainen; A. Diaz; A. Somogyi; C. M. Kewish; P. Mercere; C. David

doi:10.1117/12.2022640

26 September 2013 High efficiency x-ray nanofocusing by the blazed stacking of binary zone plates

I. Mohacsi, P. Karvinen, I. Vartiainen, A. Diaz, A. Somogyi, C. M. Kewish, P. Mercere, C. David

Proceedings Volume 8851, X-Ray Nanoimaging: Instruments and Methods; 88510Z (2013) https://doi.org/10.1117/12.2022640
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

The focusing efficiency of binary Fresnel zone plate lenses is fundamentally limited and higher efficiency requires a multi step lens profile. To overcome the manufacturing problems of high resolution and high efficiency multistep zone plates, we investigate the concept of stacking two different binary zone plates in each other’s optical near-field. We use a coarse zone plate with π phase shift and a double density fine zone plate with π/2 phase shift to produce an effective 4- step profile. Using a compact experimental setup with piezo actuators for alignment, we demonstrated 47.1% focusing efficiency at 6.5 keV using a pair of 500 μm diameter and 200 nm smallest zone width. Furthermore, we present a spatially resolved characterization method using multiple diffraction orders to identify manufacturing errors, alignment errors and pattern distortions and their effect on diffraction efficiency.

Citation Download Citation

I. Mohacsi, P. Karvinen, I. Vartiainen, A. Diaz, A. Somogyi, C. M. Kewish, P. Mercere, and C. David "High efficiency x-ray nanofocusing by the blazed stacking of binary zone plates", Proc. SPIE 8851, X-Ray Nanoimaging: Instruments and Methods, 88510Z (26 September 2013); https://doi.org/10.1117/12.2022640

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