[9p-B12-1~8] Observation of the dynamics in the cell with STED

2:55 PM - 3:10 PM JST(5:55 AM - 6:10 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-B12-5] Competition between STED and Emission Enhancement in UV-Excited Scintillators

〇Koma Sakano¹, Syunnsuke Kurosawa², Takeshi Higashiguchi³, Takeo Ejima^4,5 (1.Fac. Eng. Tohoku Univ., 2.Nagaya Univ., 3.Utsunomiya Univ., 4.SRIS Tohoku Univ., 5.IMRAM Tohoku Univ.)

Keywords:

Stimulated Emission Depletion: STED,Scintillator

To explore the conditions under which stimulated emission depletion (STED) becomes dominant, we investigated the competition between STED and emission enhancement in UV-excited scintillators. Using Ce:LSO and Tb:LSO, which exhibit different emission lifetimes, we evaluated the optical responses under excitation alone and under simultaneous irradiation with excitation and STED pulses. Consequently, emission enhancement was observed in Ce:LSO, whereas luminescence quenching was confirmed in Tb:LSO, indicating distinct origins for their optical responses. Details will be reported in the presentation.