Ionizing radiation effects in single-crystal and polycrystalline YAG

A. Vaddigiri, K. Simmons Potter, W. J. Thomes, D. C. Meister

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The effect of ionizing-radiation fields on optical materials is predominantly seen in changes in the transmission properties of the materials. Both transient and permanent photodarkening can occur in passive and active optical elements as a result of exposure to either short-pulsed or steady-state radiation. In laser materials, such as YAG, such induced optical loss can result in significant degradation of the lasing characteristic of the material, making its selection for optical device applications in radiation environments unfeasible. In the present study, the effects of ionizing radiation on the optical response of undoped and 1.1 %Nd-doped single-crystal and polycrystalline YAG have been investigated. Both room temperature and elevated temperature studies have been performed. An evaluation of the data shows some potential advantages of single-crystal over polycrystalline YAG in applications involving radiation exposure of the materials.

Original languageEnglish (US)
Pages (from-to)3882-3888
Number of pages7
JournalIEEE Transactions on Nuclear Science
Issue number6
StatePublished - Dec 2006


  • Ceramic
  • Gamma
  • Optical loss
  • Photodarkening
  • Transmission

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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