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Proceedings Paper

Coherent array of 900 semiconductor laser amplifiers
Author(s): Joseph L. Levy; Kun Roh
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Paper Abstract

The design, fabrication, and testing of a two-dimensional array of 900 laser diode power amplifiers injected by a single semiconductor master oscillator is discussed. This array extends the results of the 200-emitter array reported on last year. The array consists of a stack of ten 100-emitter linear arrays. Nine of the 100-emitter arrays were successfully stacked and injected by a semiconductor master oscillator laser by way of a 1 to 10 semiconductor ridge- waveguide splitter and amplifier array. The tenth 100-emitter array was included in the stack but the fiber optic used to connect it to the 1 to 10 splitter broke before final strain-relief was added. The 900 amplifiers produced approximately 36 W of coherent power in the near field. Poor fill optics allowed only 15.6 W to be delivered to the far field of which 5.5 W were phase aligned into a narrow beam in one axis and into 5 major spots in the other axis. Improved optics and higher power emitters are the next steps in moving this array architecture to high power and brightness.

Paper Details

Date Published: 28 April 1995
PDF: 12 pages
Proc. SPIE 2382, Laser Diodes and Applications, (28 April 1995); doi: 10.1117/12.208463
Show Author Affiliations
Joseph L. Levy, McDonnell Douglas Aerospace (United States)
Kun Roh, McDonnell Douglas Aerospace (United States)

Published in SPIE Proceedings Vol. 2382:
Laser Diodes and Applications
Kurt J. Linden; Prasad R. Akkapeddi, Editor(s)

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