56 research outputs found
Signatures of exciton coupling in paired nanoemitters
An exciton formed by the delocalized electronic excitation of paired nanoemitters is interpreted in terms of the electromagnetic emission of the pair and their mutual coupling with a photodetector. A formulation directly tailored for fluorescence detection is identified, giving results which are strongly dependent on geometry and selection rules. Signature symmetric and antisymmetric combinations are analyzed and their distinctive features identified
Ionization degree of the electron-hole plasma in semiconductor quantum wells
The degree of ionization of a nondegenerate two-dimensional electron-hole
plasma is calculated using the modified law of mass action, which takes into
account all bound and unbound states in a screened Coulomb potential.
Application of the variable phase method to this potential allows us to treat
scattering and bound states on the same footing. Inclusion of the scattering
states leads to a strong deviation from the standard law of mass action. A
qualitative difference between mid- and wide-gap semiconductors is
demonstrated. For wide-gap semiconductors at room temperature, when the bare
exciton binding energy is of the order of T, the equilibrium consists of an
almost equal mixture of correlated electron-hole pairs and uncorrelated free
carriers.Comment: 22 pages, 6 figure
Compact Optical Antenna Coupler for Silicon Photonics Characterized by Third-Harmonic Generation
Angle-Tunable Enhanced Infrared Reflection Absorption Spectroscopy via Grating-Coupled Surface Plasmon Resonance
Ultrasensitive Optical Shape Characterization of Gold Nanoantennas Using Second Harmonic Generation
Ultrasensitive broadband probing of molecular vibrational modes with multifrequency optical antennas
10.1021/nn304860tACS Nano71669-67
Plasmonic nanoantennas for multispectral surface-enhanced spectroscopies
10.1021/jp404535xJournal of Physical Chemistry C1173618620-1862
- …