Uniform field (UF) resonators create a region-of-interest, where the sample volume receives a homogeneous microwave magnetic field (B1) excitation. However, as the region-of-interest is increased, resonator efficiency is reduced. In this work, a new class of uniform field resonators is introduced: the uniform field reentrant cylindrical TE01U cavity. Here, a UF cylindrical TE01U cavity is desig...

We propose a novel high directive antenna based on 1-D cavity resonator which is composed of a layer of air and a layer of anisotropic left-handed material. Resonance conditions for such a cavity resonator are analyzed, and in the cavity, the resonant frequency is independent of the lateral thickness. A cavity antenna can be made ultra-thin based on the aforementioned property. DOI: 10.2529/PIE...

Grazing flow passing over the quiescent fluid inside the cavity of a Helmholtz resonator can excite the resonator. When the frequency of the instabilities within the shear layer is near the natural frequency of the resonator then flow-excited resonance will occur. This process causes self-sustained periodic oscillations of the flow over the orifice of the resonator. Quantitative numerical predi...

Fractional curl operator has been used to derive solutions to the Maxwell equations for fractional rectangular cavity resonator. These solutions to the Maxwell equations may be regarded as fractional dual solutions. Behavior of field lines and surface current density in fractional cavity resonator have been investigated with respect to the fractional parameter. Fractional parameter describes th...

We present a theoretical analysis of a novel cavity electromechanical system where a mechanical resonator directly modulates the damping rate kappa of a driven electromagnetic cavity. We show that via a destructive interference of quantum noise, the driven cavity can effectively act like a zero-temperature bath irrespective of the ratio kappa/omega_{M}, where omega_{M} is the mechanical frequen...

We present a numerical investigation of the ray dynamics in a paraxial optical cavity when a ray-splitting mechanism is present. The cavity is a conventional two-mirror stable resonator and the ray splitting is achieved by inserting an optical beam splitter perpendicular to the cavity axis. We show that depending on the position of the beam splitter the optical resonator can become unstable and...

We outline the fabrication of an electrically pumped surface-emitting laser with a short vertical extended cavity (VECSEL) for sensing applications. The emission wavelength is detuned by introducing microparticles into the cavity via a microfluidic channel. Multiple longitudinal modes can fit inside the resonator. A reproducible detuning of the extended cavity demands a longitudinal mode spacin...

We present a numerical investigation of the ray dynamics in a paraxial optical cavity when a ray splitting mechanism is present. The cavity is a conventional two-mirror stable resonator and the ray splitting is achieved by inserting an optical beam splitter perpendicular to the cavity axis. We show that depending on the position of the beam splitter the optical resonator can become unstable and...

Optomechanical systems couple an electromagnetic cavity to a mechanical resonator which typically is a solid object. The range of phenomena accessible in these systems depends on the properties of the mechanical resonator and on the manner in which it couples to the cavity fields. In both respects, a mechanical resonator formed from superfluid liquid helium o ers several appealing features: low...