Monolithic Passivated Stripe Geometry Double Heterostructure Injection Lasers by Selective Chemical Etching

GaAs-GaAlAs Double-Heterostructure Injection Lasers with Distributed Feedback

GaAs-GaAlAs double-heterostructure distributed-feedback injection lasers are investigated a t temperatures between 80 and 150 K under pulsed operation. The optical feedback for laser oscillation is provided by a corrugated interface between the p-GaAs active layer and the pGaA1As layer. The corrugation is made by two methods, ion milling and chemical etching, and the latter method is found to g...

Coupled-wave theory of multiple-stripe semiconductor injection lasers.

We apply coupled-wave theory to describe the lateral modes of semiconductor lasers with a periodic gain and refractive-index variation across their widths. The model is relevant to devices whose complex index of refraction is determined by current injection from closely spaced parallel electrodes. Good agreement is observed between the analytical modes and those computed numerically for compari...

Narrow stripe AIGaAs lasers using double current confinement

Gain guided AlGaAs lasers in which the current is restricted to flow between two narrow stripes have been fabricated. The double current confinement configuration, which is fabricated by a selective meltback-growth technique, enables the current injection to be restricted to a very narrow section of the active layer. These lasers exhibit very strong antiguiding and operate in many longitudinal ...

Transmission of johnsongrass chlorotic stripe mosaic virus by embryo injection

Three-Dimensional Glass Monolithic Micro-Flexure Fabricated by Femtosecond Laser Exposure and Chemical Etching

Flexures are components of micro-mechanisms efficiently replacing classical multi-part joints found at the macroscale. So far, flexures have been limited to two-dimensional planar designs due to the lack of a suitable three-dimensional micromanufacturing process. Here we demonstrate and characterize a high-strength transparent monolithic three-dimensional flexural component fabricated out of fu...