Abstract

A simplified multiwavelength prototype of an axially symmetric diode laser device based on stacks made of single emitters has been made, and the performance of the device has been demonstrated experimentally. The results verify that kilowatt-level light power can be focused into a circular spot with a 1/e2 diameter of 360  μm, a focal length of 100  mm, and a numerical aperture of 0.24, thus producing an average power density in excess of 10kW/mm2 and a brightness of 6×1010W  m2sr1. The experiments also predict that it will be possible to increase these values to more than 60kW/mm2 and 3×1011W  m2sr1.

© 2006 Optical Society of America

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