Observation Of Strong Yellow Emission For High-Conductivity Zno Excited By Sub-Terahertz Gyrotron Beam
2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2019）
Abstract
We observed yellow light emission from ZnO single crystals with high conductivity by the irradiation of sub-terahertz waves from gyrotrons. The emitted spectrum has a broad peak around 2 eV. As the spatial distribution of yellow light reflects the gyrotron beam profile and is visible with bare eyes, the high-conductive ZnO single crystals may be applied as an imager of gyrotron beam patterns usable for quick beam diagnosis.
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Key words
yellow emission,sub-terahertz gyrotron beam,yellow light emission,high conductivity,sub-terahertz waves,spatial distribution,gyrotron beam profile,quick beam diagnosis,high-conductive single crystals,high-conductivity,electron volt energy 2.0 eV,ZnO
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