Photoinduced Singlemode Waveguide in Optical Fluoride Glasses Using Plasma Filaments

Fluoride Glasses and Planar Optical Waveguides

Fluoride glasses are of great interest for optical applications, as low phonon energy hosts for rare-earth ions. With an increasing need for more compact optical devices that impose higher dopant concentration, research activity has been focused on the fabrication of fluoride glass planar waveguides to produce integrated lasers and optical amplifiers, especially those based on Er3þ-doped glasse...

Femtosecond fiber laser direct writing of optical waveguide in glasses

There is a great deal of interests and efforts in the area of femtosecond (fs) laser direct writing of transparent materials, which shows promise to be a powerful and flexible technique for rapid fabrication of photonic micro-device, such as gratings, waveguides and optical amplifiers. Waveguide properties depend critically on the sample material properties and writing laser characteristics. In...

Photoinduced Fluidity and Viscoelasticity in Chalcogenide Glasses

This work is an attempt to apply conventional mechanical testing to characterize the photoinduced viscoelastic behavior of chalcogenide glasses. Creep or relaxation-recovery experiments are usually performed to characterize the delayed elastic contribution to deformation, during thermally activated flow. In this paper, relaxation-recovery is used to characterize delayed elasticity under irradia...

Quantum molecular lensing of femtosecond laser optical/plasma filaments

The long-range filamentary propagation of intense femtosecond pulses in atmosphere has been observed for the first time to be strongly effected by quantum rotational wave packets. A two-pulse experiment shows that a filamenting probe pulse can be steered and trapped in or destroyed by the rotational alignment wake following a pump filament. © 2009 American Institute of Physics. DOI: 10.1063/1.3...

Photosensitivity and volume gratings in phosphate glasses for rare-earth-doped ion-exchanged optical waveguide lasers