Spontaneous Emission in Coaxial Cylindrical Cavities

Tuning the spontaneous light emission in phoxonic cavities

Evangelos Almpanis,* Nikolaos Papanikolaou, Georgios Gantzounis, and Nikolaos Stefanou Department of Microelectronics, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR “ Demokritos,” GR-153 10 Athens, Greece Graduate Aeronautical Laboratories (GALCIT) and Department of Applied Physics, California Institute of Technology, Pasadena, California 9112...

Unbalanced Cylindrical Magnetron for Accelerating Cavities Coating

Field Emission in Rf Cavities

Electron field emission limits the accelerating gradient in superconducting cavities. The present paper shows how and why it is an important problem. The phenomenology of field emission is then described, both in DC and RF regimes. In a third part, the merits of a few plausible “remedies” to field emission are discussed. 1 . WHY IS IT A PROBLEM ? When exposed to an intense, properly oriented el...

Extracting photon periodic orbits from spontaneous emission spectra in laterally confined vertically emitted cavities.

We report our observation of the signature of photon periodic orbits in the spontaneous emission spectra of large-aperture vertical-cavity surface-emitting lasers (VCSELs). The high-resolution measurement clearly demonstrates that over a thousand cavity modes with a narrow linewidth can be perfectly exhibited in the spontaneous emission spectrum just below the lasing threshold. The Fourier-tran...

Spontaneous Emission in Cavities: How Much More Classical Can You Get? 1

Cavity-induced changes in atomic spontaneous emission rates are often interpreted in terms of quantum electrodynamical zero-point field fluetuations. A completely elassical method o f computing this effect in terms of the unquantized normal mode structure of the cavity is presented here, Upon applying the result to a classical dipole radiating between parallel mirrors, we obtain the same cavity...