Single mode thermal emission

Linearly polarized, single-mode spontaneous emission in a photonic nanowire.

We introduce dielectric elliptical photonic nanowires to funnel efficiently the spontaneous emission of an embedded emitter into a single optical mode. Inside a wire with a moderate lateral aspect ratio, the electromagnetic environment is largely dominated by a single guided mode, with a linear polarization oriented along the ellipse major axis. The resulting monomode spontaneous emission is ma...

Non-thermal Radio Emission from Single Hot Stars

Many O stars are observable at radio wavelengths, due to thermal emission from the ionized gas in the stellar wind. The emergent radio spectrum has a characteristic spectral index ∼ 0.6 (i.e., Fν ∝ λ ). However, about 25% of the brightest O stars have a radio spectrum that differs from the thermal radio emission (Bieging, Abbott, & Churchwell 1989). This non-thermal radio emission is believed t...

Detection of Bioaerosols using Single Particle Thermal Emission Spectroscopy

Can single O stars produce non - thermal radio emission ?

We present a model for the non-thermal radio emission from presumably single O stars, in terms of synchrotron emission from relativistic electrons accelerated in wind-embedded shocks. These shocks are associated with an unstable, chaotic wind. The main improvement with respect to earlier models is the inclusion of the radial dependence of the shock velocity jump and compression ratio, based on ...

Comment on "single-mode spontaneous emission from a single quantum dot in a three-dimensional microcavity".

The spontaneous emission from an isolated semiconductor quantum dot state has been coupled with high efficiency to a single, polarization-degenerate cavity mode. The InAs quantum dot is epitaxially formed and embedded in a planar epitaxial microcavity, which is processed into a post of submicron diameter. The single quantum dot spontaneous emission lifetime is reduced from the noncavity value o...