Excited State Absorption and Nonradiative Transition from the Lowest 5d State of $Ce^{3+}:YAlO_3$

$Ce^{3+}:YAlO_3$ 단결정의 5d 상태 흡수 및 비발광 천이

  • 김지병 (충북대학교 물리학과) ;
  • 임기수 (충북대학교 물리학과) ;
  • 이건준 (한국표준과학연구원 분광연구그룹) ;
  • 김동호 (한국표준과학연구원 분광연구그룹) ;
  • 한재민 (한국원자력연구소 원자분광학연구실)
  • Published : 1995.03.01

Abstract

We have measured the excited state absorption in $Ce:YAlO_{3}$, crystals for the first time and assigned it for a 5d$\rightarrow$conduction band transition. Two broad absorption bands were observed at 555 nm and 465 nm fowllowing the 308 nm XeCl laser excitation and their cross sections and oscillator strengths were calculated. We have also measured the fluorescence lifetimes in between 300 K and 700 K to study the nonradiative relaxation from the lowest 5d state of $Ce^{3+}$ ions and explained ESA and the transition process from the state in terms of a configurational coordinate.dinate.

Keywords

References

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