文档介绍：
All-optically controlled fourth- and sixth-order fluorescence
processes of Pr3+:YSO#
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Li Changbiao, Zheng huaibin, Zhang Yanpeng*
(Key Laboratory for Physical Electronics and Devices of the Ministry of Education , Xi’an
Jiaotong University, Xi’an 710049, China)
Abstract: For the first time, we report all-optically controlled fourth- and sixth-order fluorescence
processes with and without splitting, in a heteronuclear-like molecule system of Pr3+:YSO both in
theory and experiment. We construct the asymptote among Pr3+ ions localized at different cation
vacancies. By changing the frequency detuning and power of the controlling field, fluorescence signal
can be controlled to switch from an enhanced peak to a suppressed dip, and vise versa. Such transition
has a potential application to produce all-optical switches. The results can be well explained by a
theory model based on the high-order coherent process.
Key words: Nonlinear optics; Fourth- and sixth-order fluorescence; Enhanced and suppressed
0 Introduction
As well known, rare earth ion doped anic crystals can improve or e the
ultra-fast decoherence processes in solids which prohibit essful implementation of coherent
excitation. Compared with atomic gases, atomic coherence-induced effects in solid materials are
very attractive for practical applications. Progresses related