Numerical modeling of alkali vapor lasers

Numerical Modeling of Vertical Cavity Semiconductor Lasers

A vertical cavity surface emitting laser (VCSEL) is a diode laser whose optical cavity is formed by growing or depositing DBR mirror stacks that sandwich an active gain region. The resulting short cavity supports lasing into a single longitudinal mode normal to the wafer, making these devices ideal for a multitude of applications, ranging fiom high-speed communication to high-power sources (fro...

Microfabricated alkali atom vapor cells

We describe the fabrication of chip-sized alkali atom vapor cells using silicon micromachining and anodic bonding technology. Such cells may find use in highly miniaturized atomic frequency references or magnetometers. The cells consist of cavities etched in silicon, with internal volumes as small as 1 mm. Two techniques for introducing cesium and a buffer gas into the cells are described: one ...

Terahertz radiation in alkali vapor plasmas

Effect of light Polarization on the absorption index of alkali metal vapor in optical pumping phenomenon

Recently atomic magnetometers are one of the best tools in biomagnetic measurement such as magnetic field of brain and heart. In this paper, the technology of optically pumped atomic magnetometer based on circularly polarized light absorption pumping is described. We have been investigated a new method for measuring polarization effect in an alkali vapor based on polarized light transmission. I...

Modeling and characterization of InAs/GaAs quantum dot lasers grown using metal organic chemical vapor deposition

We report on the lasing characteristics of threeand five-stack InAs/GaAs quantum dot QD lasers grown by metal organic chemical vapor deposition. By increasing the number of stacked dot layers to 5, lasing was achieved from the ground state at 1135 nm for device lengths as short as 1.5 mm no reflectivity coatings . The unamplified spontaneous emission and Z ratio as a function of injection curre...