Decay Profiles and Spectra of Stimulated Luminescence in CdI2
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概要
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Decay profiles and spectral distributions of the stimulated luminescence in Cdl2 crystalshave been investigated at liquid nitrogen temperature under high density excitationwith a N2-gas laser in the excitonic absorption band. The observed luminescence decaycurve consists of two components, fast (< 20 ns) and slow (about 5 μs) ones. The slowcomponent is identical to the main decay component of the spontaneous emission whichis observed rather strongly in the case of low density excitation. The fast componentis peculiar to the case of high density excitation, and is connected to the stimulatedemission. This means that the stimulated luminescence appears in the early stage ofthe luminescence decay. The spectral distribution of the fast component, namely, thestimulated emission spectrum, consists of eight fine-structures and is different from theusual spontaneous emission spectum from self trapped exciton (STE) states. Discussionswill be made on the origin of these structures relating it with fine-structures of the STEstates.
- 福井大学工学部の論文
福井大学工学部 | 論文
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