Michael A. Parker

Square broad-area multiple-quantum-well laser

A new single-element broad-area laser has been designed, fabricated, and tested for use as an integrated optical memory element or logic gate. The design incorporates a square gain section and an intracavity saturable absorber for each of the two orthogonal cavities. The devices lases in two spatially orthogonal modes that can be independently modulated by the two saturable absorbers.

Diode laser logic for use as smart pixels for optical signal processing

Diode Laser Logic is a complete, new logic family comprised of Q- switched lasers and photodetectors. The lasers and detectors are monolithically integrated on multiple quantum well laser heterostructure with semi-insulating substrates. Preliminary results indicate an ON/OFF contrast ratio better than 500:1 and a gain in excess of 20. As a result, the devices can be cascaded to form more complex optical circuits. In addition to introducing the Diode Laser Logic family, a basic model is presented and the fabrication process is discussed.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.