We analyze the optical bistability and the entanglement of two movable mirrors coupled to a two-mode laser in a doubly resonant cavity. We show that in stark contrast to the usual red-detuned condition for observing bistability in single-mode optomechanics, the optical intensities exhibit bistability for all values of cavity laser detuning due to intermode coupling induced by two-photon atomic ...

A 10-mm cavity length magnetooptically Q-switched Nd:GdVO4 laser was demonstrated using a single-crystalline ferrimagnetic rare-earth iron garnet film. To design the Q-switching system, the magnetic, optical, and magnetooptical properties of the garnet film were measured. The diode pumped solid-state laser cavity was constructed using a 190-μm-thick garnet film with 58% transmittance. The garne...

Chaperonin GroEL is an essential molecular chaperone that assists protein folding in the cell. With the aid of cochaperonin GroES and ATP, double ring-shaped GroEL encapsulates non-native substrate proteins inside the cavity of the GroEL-ES complex. Although extensive studies have revealed the outline of GroEL mechanism over the past decade, central questions remain: What are the in vivo substr...

Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and...

We present a novel fiber-based near-field optical head consisting of a straw-shaped writing probe and a flat gap sensing probe. The straw-shaped probe with a C-aperture on the end face exhibits enhanced transmission by a factor of 3 orders of magnitude over a conventional fiber probe due to a hybrid effect that excites both propagation modes and surface plasmon waves. In the gap sensing probe, ...

http://dx.doi.org/10.1590/S1806-37132014000600013 The current intercostal nerve preservation strategy requires that care be taken when closing a thoracotomy. There are currently three thoracotomy closure techniques: • transosteal or transcostal suture closure • transperiosteal suture closure(5) • pericostal suture closure, whereby sutures are placed in the virtual space between the periosteum a...

The paper aims to analyze the effects of various Prandtl number and different nanoparticles for heat transfer entropy generation free convection laminar fluid flow in an L-shaped cavity filled by nanofluid. To investigate second law characteristics convective from L- shaped geometry water nanofluids (Cu-water, Ag-water, Al2O3-water), on average Nusselt number, total Bejan has been numerically a...