Time-resolved luminescent VUV-spectroscopy of pure and doped by rare earth ions crystals of strontium fluoride
✍ Scribed by K.V. Ivanovskikh; V.A. Pustovarov; B.V. Shulgin
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 268 KB
- Volume
- 543
- Category
- Article
- ISSN
- 0168-9002
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✦ Synopsis
The spectroscopic properties SrF 2 -Eu(1%), SrF 2 -Er(1%) and nominal pure SrF 2 crystals have been studied using time-resolved vacuum ultraviolet (VUV) spectroscopy under pulsed synchrotron radiation excitation. The 4f k 24f kÀ1 5d (f-d) and 4f k 24f k (fÀf) excitation spectra and emission spectra (with and without of time resolution) have been investigated in the wide energy region at 8 and 295 K. Moreover, the emission and excitation behaviors of intrinsic luminescence SrF 2 have been studied at 8 K, when the fast and slow components given by singlet and triplet relaxation of self-trapped excitons (STE) are observed. Special attention is devoted to VUV emission of Er 3+ -doped SrF 2 due to spin-allowed and spin-forbidden 4f 10 5d-4f 11 transitions.