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Title: Optical birefringence imaging of x-ray excited lithium tantalate

X-ray absorption in lithium tantalate induces large, long-lived (~10 -5 s) optical birefringence, visualized via scanning optical polarimetry, likely arising from electrooptic coupling to x-ray induced electric fields. Similar birefringence measured from glass, sapphire, and quartz was two orders of magnitude weaker. This suggests that x-ray excited charges preferentially create ordered, aligned dipoles within the noncentrosymmetric unit cell of ferroelectric LiTaO 3, enhancing the electric field compared to more isotropic charge distributions in the other materials. In conclusion, time-resolved measurements show a prompt response on a picosecond time scale, which along with the long decay time suggest novel approaches to optical detection of x-rays using ferroelectric materials.
Authors:
; ; ; ; ;
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SC0004078
Type:
Accepted Manuscript
Journal Name:
APL Photonics
Additional Journal Information:
Journal Volume: 2; Journal Issue: 8; Journal ID: ISSN 2378-0967
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
National Institutes of Health (NIH), National Institute of General Medical Sciences; USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
OSTI Identifier:
1375045
Alternate Identifier(s):
OSTI ID: 1373987

Durbin, S. M., Landcastle, A., DiChiara, A., Wen, Haidan, Walko, D., and Adams, B. Optical birefringence imaging of x-ray excited lithium tantalate. United States: N. p., Web. doi:10.1063/1.4997414.
Durbin, S. M., Landcastle, A., DiChiara, A., Wen, Haidan, Walko, D., & Adams, B. Optical birefringence imaging of x-ray excited lithium tantalate. United States. doi:10.1063/1.4997414.
Durbin, S. M., Landcastle, A., DiChiara, A., Wen, Haidan, Walko, D., and Adams, B. 2017. "Optical birefringence imaging of x-ray excited lithium tantalate". United States. doi:10.1063/1.4997414. https://www.osti.gov/servlets/purl/1375045.
@article{osti_1375045,
title = {Optical birefringence imaging of x-ray excited lithium tantalate},
author = {Durbin, S. M. and Landcastle, A. and DiChiara, A. and Wen, Haidan and Walko, D. and Adams, B},
abstractNote = {X-ray absorption in lithium tantalate induces large, long-lived (~10-5 s) optical birefringence, visualized via scanning optical polarimetry, likely arising from electrooptic coupling to x-ray induced electric fields. Similar birefringence measured from glass, sapphire, and quartz was two orders of magnitude weaker. This suggests that x-ray excited charges preferentially create ordered, aligned dipoles within the noncentrosymmetric unit cell of ferroelectric LiTaO3, enhancing the electric field compared to more isotropic charge distributions in the other materials. In conclusion, time-resolved measurements show a prompt response on a picosecond time scale, which along with the long decay time suggest novel approaches to optical detection of x-rays using ferroelectric materials.},
doi = {10.1063/1.4997414},
journal = {APL Photonics},
number = 8,
volume = 2,
place = {United States},
year = {2017},
month = {8}
}