We report that it is possible to obtain a cavity structure by the deformation of a unit cell of an split ring resonator (SRR) structure. We presented the Q-factor of the cavity resonance as 192 for an SRR-based single cavity. Subsequently, we brought two and three cavities together with an intercavity distance of two metamaterial unit cells and investigated the transmission spectrum of SRRbased...

We plan to answer this question with the Munich micromaser in mind [1]. It consists of a superconducting cavity maintained at T = 0.3K. Hence, the average thermal photons present in the cavity is n̄th = 0.033. The cavity dissipation parameter κ = ν/2Q stands at 3.146 Hz with the cavity Q = 3.4× 10 and ν being the masing frequency. A clever velocity selector sends Rb atoms in the upper of its two...

We theoretically and experimentally perform a comparative study on performance of the linear standing-wave cavity and ring cavity for external cavity frequency doubling at the wavelength from 795 nm to 397.5 nm. The two cavities show obvious differences of the thermal effect of nonlinear crystal, cavity sensitivity, and maximum output power. The results show that ring cavity as the external enh...

Two-dimensional direct numerical simulation of the flow over a NACA0018 airfoil with a cavity is presented. The lowReynolds number simulations are validated bymeans of flow visualizations carried out in awater channel. From the simulations, it follows that there are twomain regimes of flow inside the cavity. Depending on the angle of attack, the first or the second shear-layer mode (Rossiter to...

BACKGROUND Pelvic pain is a common gynecologic problem. We report a case of a noncommunicating accessory uterine cavity as a cause of pelvic pain in a young adolescent. CASE A 17-year-old nulligravida presented with worsening pelvic pain. Transvaginal ultrasound revealed a 3-cm cavity within the myometrium. Hysteroscopy revealed a normal uterine cavity. Surgical excision of the accessory cavi...