Published June 1, 2019
| public
Journal Article
Retrieval of the complex-valued refractive index of germanium near the M_(4,5) absorption edge
Chicago
Abstract
The complex-valued index of refraction of germanium in the extreme ultraviolet (XUV) is measured by multi-angle reflectance of synchrotron radiation. The resulting index of refraction is higher resolution than previously measured values. It reveals new structures attributed to transitions from the 3d-core orbitals to the Σ^_(5,2) and the X^c_(5,2) conduction bands. Additionally, it is shown that the problem of total external reflection, which renders multi-angle reflectance measurements insensitive to the complex-valued refractive index at grazing incidence, can be overcome by employing measurements at angles of incidence away from the critical angle.
Additional Information
© 2019 Optical Society of America. Received 22 March 2019; revised 23 April 2019; accepted 24 April 2019; posted 25 April 2019 (Doc. ID 362900); published 31 May 2019. Funding: Army Research Office (ARO) (WN911NF14-1-0383); Swiss National Science Foundation (SNF) (P2EZP2_165252, P300P2_174293); Office of Energy Efficiency and Renewable Energy (EERE); Air Force Office of Scientific Research (AFOSR) (FA9550-15-1-0037); W. M. Keck Foundation; Office of Assistant Secretary of Defense for Research and Engineering; Defense Sciences Office, DARPA (DSO, DARPA) (W31P4Q-13-1-0017).Additional details
- Alternative title
- Retrieval of the complex-valued refractive index of germanium near the M4,5 absorption edge
- Eprint ID
- 96594
- DOI
- 10.1364/josab.36.001716
- Resolver ID
- CaltechAUTHORS:20190620-093004766
- Army Research Office (ARO)
- WN911NF14-1-0383
- Swiss National Science Foundation (SNSF)
- P2EZP2_165252
- Swiss National Science Foundation (SNSF)
- P300P2_174293
- Department of Energy (DOE)
- Air Force Office of Scientific Research (AFOSR)
- FA9550-15-1-0037
- W. M. Keck Foundation
- Defense Advanced Research Projects Agency (DARPA)
- W31P4Q-13-1-0017
- Created
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2019-06-20Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field