What is plasmonic nanocavity?
In the past decade, advances in nanotechnology have led to the development of plasmonic nanocavities that facilitate light–matter strong coupling in ambient conditions. The most robust example is the nanoparticle-on-mirror (NPoM) structure whose geometry is controlled with subnanometer precision.
What is plasmonic near field?
Diffraction of light prevents optical microscopes from having spatial resolution beyond a value comparable to the wavelength of the probing light. This essentially means that visible light cannot image nanomaterials.
What is near field enhancement?
Near-field enhancement is one of the most remarkable phenomena associated with nobel metals in the visible region. When light interacts with metals, collective oscillations of the conduction electrons can be excited at the metal surface, which are known as surface plasmons (SPs)1.
Can plasmons in plasmonic nanocavity arrays be used as lasing feedback?
Thus, band-edge lattice plasmons supported in plasmonic nanocavity arrays can behave as lasing feedback with increased modulation speeds, because stimulated emission processes will be enhanced by the Purcell effect 5, 12.
What is the LDOS of plasmonic nanolasers?
Plasmonic nanolasers have cavities with ultrasmall Vmode, LDOS that can be increased up to 1,000 times, together with femtosecond cavity lifetimes 9. However, due to losses, the Q for isolated plasmonic cavities is low 13.
How to detect plasmonic nanoparticles surrounded by gain media?
Arrays of plasmonic nanoparticles surrounded by gain media were optically pumped using a 800-nm femtosecond-pulsed laser, and the emission spectra were collected at a detection angle of α = 0° (see Methods and Supplementary Fig. S5 ).
What is the quasistatic approximation of nanoparticles?
In the quasistatic approximation, a subwavelength plasmonic nanoparticle oscillates like a dipole emitter and radiates spherical waves into the far-field.