This occurs when the particle velocity makes an\nangle, with respect to some major crystal axis, being sufficiently larger than\nthe axial-channelling angle. For such orientation, a complete description of\nspectral and polarization characteristics of the radiation is derived. At\nplanar channelling,...
Nonlinear optical spectroscopies are powerful tools for investigating both static material properties and light-induced dynamics. Terahertz (THz) emission spectroscopy has emerged in the past several decades as a versatile method for directly tracking th
et al. Photon-separation to enhance the spatial resolution of pulsed STED microscopy. Nanoscale 11, 1754–1761 (2019). Article Google Scholar Castello, M., Diaspro, A. & Vicidomini, G. Multi-images deconvolution improves signal-to-noise ratio on gated stimulated emission depletion microscopy....
In the case of an SOA, the fundamental origin of noise is spontaneous emission. As has already been discussed in Section II.A, with reference to recombination processes, electrons and holes spontaneously recombine resulting in the emission of a photon over timescales on the order of a nanosecond...
While this example does not involve reversible switching, it shows clearly that emission spectroscopy is useful in determining when a reaction occurs from one fluorescent compound to another, and in this case the corresponding absorption spectra revealed limited switching of the system due to the ...
The results show that obvious suppression of spontaneous emission occurs when the photonic band gap overlaps with the Tb3+ emission band, while enhancement ... ZD Liu,B Li,Z Ji - 《Applied Mechanics & Materials》 被引量: 0发表: 2013年 Spontaneous emission from fluorescent molecules embedded in...
摘要: Summary from only given. When optically pumped above threshold, quantum well lasing occurs at a wavelength of 1005 nm. The presented analysis provides a basis for the design of high efficiency LEDs and lasers based on 2D quantum well photonic crystals....
This means that when an electron-phonon interaction is involved in an electron transition, a transition occurs via implicit states induced by local fluctuations. On the other hand, although a dynamical conductivity formula for superconducting materials could be obtained from Eliashberg theory [13] ...
A sensitizer (Sen) absorbs a photon, which energy after an intramolecular intersystem crossing and an intermolecular triplet energy transfer event, ends up in the excited triplet state of the annihilator (An). When two annihilators in their triplet state meet triplet-triplet annihilation occurs, ...
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