Photoluminescence nonlinearity and picosecond transient absorption in an LYSO:Ce scintillator excited by a 266 nm ultraviolet laser

• Published in: RSC advances Vol. 11; no. 28; pp. 172 - 1724
• Main Authors: Wei, Kun, Hei, Dongwei, Xu, Qing, Liu, Jun, Guo, Quan, Weng, Xiufeng, Tan, Xinjian, Sheng, Liang
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 10.05.2021; The Royal Society of Chemistry
• Subjects: Absorption; Cerium; Chemistry; Density; Dipole interactions; Excitation; Interaction models; Lutetium; Nonlinearity; Photoluminescence; Radiation; Scintillation counters; Ultraviolet lasers; Yttrium

Lutetium-yttrium oxyorthosilicate doped with cerium (LYSO:Ce) is a widely used scintillator, and the study of its nonlinear behavior under high excitation density is very significant owing to its direct influence on radiation measurements. Using a 266 nm ultraviolet laser to excite an LYSO:Ce crysta...