Evaluation of the X-ray/EUV Nanolithography Facility at AS through wavefront propagation simulations-Reference-Cited by-同舟云学术

Evaluation of the X-ray/EUV Nanolithography Facility at AS through wavefront propagation simulations

Published:2024-04-17 Issue:3 Volume:31 Page:485-492
ISSN:1600-5775
Container-title:Journal of Synchrotron Radiation
language:
Short-container-title:J Synchrotron Rad

Author:

Knappett Jerome B. M.,Haydon Blair^ORCID,Cowie Bruce C. C.,Kewish Cameron M.^ORCID,van Riessen Grant A.^ORCID

Abstract

Synchrotron light sources can provide the required spatial coherence, stability and control to support the development of advanced lithography at the extreme ultraviolet and soft X-ray wavelengths that are relevant to current and future fabricating technologies. Here an evaluation of the optical performance of the soft X-ray (SXR) beamline of the Australian Synchrotron (AS) and its suitability for developing interference lithography using radiation in the 91.8 eV (13.5 nm) to 300 eV (4.13 nm) range are presented. A comprehensive physical optics model of the APPLE-II undulator source and SXR beamline was constructed to simulate the properties of the illumination at the proposed location of a photomask, as a function of photon energy, collimation and monochromator parameters. The model is validated using a combination of experimental measurements of the photon intensity distribution of the undulator harmonics. It is shown that the undulator harmonics intensity ratio can be accurately measured using an imaging detector and controlled using beamline optics. Finally, the photomask geometric constraints and achievable performance for the limiting case of fully spatially coherent illumination are evaluated.

Funder

Australian Research Council, Linkage Infrastructure, Equipment and Facilities

Department of Education, Skills and Employment, Australian Government

Australian Institute of Nuclear Science and Engineering

Publisher

International Union of Crystallography (IUCr)

Link

https://journals.iucr.org/s/issues/2024/03/00/yi5149/yi5149.pdf

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