12W Broad Area Semiconductor Amplifier with Diffraction Limited Optical Output

Abstract

Broad area travelling wave GaAIAs SQW optical amplifiers have been fabricated and characterised. Using a 600µm wide and 1000µm long double pass amplifier, 12 W of peak pulsed output power was achieved with a 0.08° wide diffraction limited far-field lobe. Small signal gain of 31 dB was measured in a 400µm wide active area device. © 1991, The Institution of Electrical Engineers. All rights reserved.