Very high Q frequency‐locked Fabry–Perot cavity

Analysis of third-order nonlinearity effects in very high-Q WGM resonator cavity ringdown spectroscopy

Very High Resolution Rf Cavity Bpm*

Linear collider (LC) interaction region beam sizes and component position stability requirements are expected to be a few nanometers[1]. It is important to show that the related tolerances can be achieved, with an electron beam if possible. Using recently developed component stabilization technology, very high-resolution beam position monitors (BPM’s), and the ultra-low emittance beam at the KE...

Coherently opening a high-Q cavity.

We propose a general framework to effectively "open" a high-Q resonator, that is, to release the quantum state initially prepared in it in the form of a traveling electromagnetic wave. This is achieved by employing a mediating mode that scatters coherently the radiation from the resonator into a one-dimensional continuum of modes such as a waveguide. The same mechanism may be used to "feed" a d...

High-Q side-coupled semi-2D-photonic crystal cavity

High-Q semi-2D-photonic crystal cavities with a tapered edge and side-coupled bus waveguide are demonstrated. With a quadratic design, the unloaded cavity presents a theoretical ultrahigh quality factor up to 6.7 × 10(7) for the condition that there are mere 34 holes in the propagated direction, which is pretty close to the 2D and 1D counterpart. Combined with a side-coupled bus waveguide, an a...

A High-Q and Small-Mode-Volume Cavity in Microfibers

We propose a novel approach to confine light in a silica microfiber (MF) cavity using a lattice-constant-varying nanohole array. The MF cavity integrated with an optimally designed nanohole array produces Q-factors ~ 7×10 in the near infrared region while its mode volume remains ~ (λe). Our MF cavity of enhanced performance will find potential applications in fiber lasers, nonlinear fiber optic...