Threshold current reduction due to piezoelectric effects in InGaAs/AlGaAs laser diodes

Thermally-activated degradation of InGaN-based laser diodes: Effect on threshold current and forward voltage

Article history: Received 30 June 2014 Accepted 8 July 2014 Available online xxxx

Transverse effects in the laser threshold due to electronic-vibrational coupling

Transverse effects in the laser threshold, originated by electronic-vibrational coupling in the active centers, are analyzed theoretically by means of the semiclassical two-level Maxwell-Bloch equations. A single longitudinal mode is considered. It is found that the first laser threshold suffers modifications depending on the electronic-vibrational coupling strength. This coupling imposes certa...

Improving Blue InGaN Laser Diodes Performance with Waveguide Structure Engineering

To enhance lasers’ power and improve their performance, a model wasapplied for the waveguide design of 400 nm InGaN/InGaN semiconductor laser, whichis much easier to implement. The conventional and new laser structures weretheoretically investigated using simulation software PICS3D, which self-consistentlycombines 3D simulation of carrier transport, self-heating, and opt...

Critical-current reduction in thin superconducting wires due to current crowding

Diodes Laser in Ent Surgery

LASER in the otology field was used to perform tympanotomy and for the placement of ventilation tubes, vaporization of horny pearls and adhesion in the eardrum, remobilisations and ossicular modelings, “spot-welding”; in this field the most argued area of applicability of LASER is the surgery of the otosclerosis. The otosclerosis treatment with surgical LASER started with Perkins and Di Bartolo...