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首页> 外文会议>Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions >Exothermal spectral diffusion in media with large diagonal disorder of 4f-states: the role of phenomenology models in cooperative and coherent optical phenomena
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Exothermal spectral diffusion in media with large diagonal disorder of 4f-states: the role of phenomenology models in cooperative and coherent optical phenomena

机译：具有4F态对角线障碍的培养基中的放热光谱扩散：现象学模型在协作和相干光学现象中的作用

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摘要

In an ensemble of rare earth ions (REI) with large energy disorder, interaction of the ions between themselves and with vibrations of the media gives rise to spectral diffusion, ie., to energy redistribution within the subsystem of the ensemble's excited states. It usually occurs at concentrations $GREQ 10$+19$/ cm$+$MIN@3$/. At low temperatures kT $VLS W (W is the disorder scale), the process turns into energetically unidirectional exothermal spectral diffusion (ExoTSD). Below we consider general regulations of the ExoTSD, its effect on formation of cooperative, coherent, and critical photoresponse of the system. Special attention is paid to the role of collective 4f-states in media with high REI concentration.
机译：在具有大能量障碍的稀土离子（REI）的集合中，它们之间的离子与介质之间的振动相互作用导致谱扩散，即。，在集合兴奋状态的子系统内能量再分配。它通常发生在浓度$ Greq 10 $ + 19 $ / cm $ + $ min @ 3 $ /。在低温下，KT $ VLS W（W是无序量表），该过程变成了能量单向放热光谱扩散（Exotsd）。下面我们考虑了Exotsd的一般规定，它对系统的合作，连贯性和临界光响应形成的影响。特别注意集体4F状态在高度浓度的媒体中的作用。

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