 | Hartmut Figger - Computers - 2001 - 570 pages
...characteristic and of longer wavelength (in the red or near infrared). According to the Frank- Condon principle, absorption proceeds vertically up into...(double well vibrations) or thermal activation (ie, self-trapping) as shown in Fig. 20. Also, above-barrier absorption followed by relaxation populates... | |
 | Lorenzo Pavesi, Sergey Gaponenko, Luca Dal Negro - Science - 2003 - 502 pages
...scale of milliseconds. The outer well, a new state found only in ultra small nanoparticles (< 1 .75 nm across), is a trap well (at 3.85 A) that radiates...activation (ie, self trapping) as shown in Figure 27. Also, above-barrier absorption, followed by relaxation populates the trapping well. For sizes less... | |
 | Vijay Kumar - Technology & Engineering - 2011 - 385 pages
...Physical Society (APS) 2003). According to the Frank— Condon principle for molecular transitions, absorption proceeds vertically up into the inner well...followed by transfer into the outer by bond expansion via tunnelling or thermal activation (ie self-trapping) as in Fig. 1.46. Also, above-barrier absorption,... | |
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... gain. The blue emission proceeds at an interatomic distance at the top of the barrier (~3 A), where the lifetime is in the nanosecond regime and mixing between the two states is most significant. Emission from the bottom of the outer well is of longer... 