NettetA ring of sub-wavelength spaced dipole-coupled quantum emitters features extraordinary optical properties when compared to a one-dimensional chain or a random collection of emitters. One finds the emergence of extremely subradiant collective eigenmodes similar to an optical resonator, which features strong 3D sub-wavelength field confinement … Nettet1. jan. 1997 · We thus discuss interband tran- sitions but not intraband transitions (Drude or free-carrier absorption) or optical absorption arising from the excitation of phonons or electrons on impurities. Plasmons, collective excitations of an electron gas, can be excited optically in special geometries, but we omit discussing them.
Perfect excitation and attenuation-free propagation of graphene …
Nettet11. jun. 2024 · Direct energy conversion from light into electricity via the decay of surface plasmons causing the excitation of hot electron–hole pairs is also a feasible channel. … Nettet12. jul. 2024 · Thus, we propose in this work the following mechanisms after the interband excitation: (1) The interband-excitation produced conduction-band electrons can also … marinera la concheperla
Remarkable photothermal effect of interband excitation on ... - PubMed
Nettet22. jan. 2024 · It is seen that the interband excitation shows a photocurrent peak around 2.10 eV, whereas the in-gap OR waveform diminishes above the bandgap. Considering the instrumental factors, the photocurrent generated by interband excitation is found to be ∼500 times larger in density compared with that of the in-gap OR. Nettet8. apr. 2024 · Here, we report the discovery of order-disorder phase transitions characterized by an abrupt spectral broadening of valence bands taken by angle-resolved photoemission spectroscopy (ARPES) at the ... Nettet19. jan. 2024 · TTA-UC is a photophysical process of generating one high-energy singlet photon upon annihilation of two lower-energy triplet excitons. 19–21 TTA-UC occurs through a series of triplet energy transfer events in an ensemble of annihilator chromophores doped with triplet sensitizer. 22 The triplet sensitizer or donor (D) upon … marinera importancia