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Proceedings Paper

Photonic power delivery through optical fiber using very high power laser diode arrays
Author(s): Matthew Heino; Robert Saethre
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Paper Abstract

Described is a system that will provide isolated electric power for a circuit that drives the core reset of a pulsed power modulator. This can be accomplished by coupling light from a number of diode laser bars to bundles of 200 micrometers multimode optical fibers. This is then coupled to photo- voltaic power converters that will deliver 16 V 29 mA of electricity from 1 watt of optical power. Spot size at the bundle face is a Gaussian ellipse with a major axis of 0.9 mm radius and a minor axis of 0.118 mm with a maximum full angle divergence of 16 X 2.4 degrees. Data is presented from four 20 W laser bars coupled to four bundles of 12 fibers generating a total of 24 W of electrical power. Various schemes are used to maximize coupling into the optical fiber while limiting the number of optical components, and comparing components such as fresnel and aspheric lenses and lens ducts for effectiveness and cost. This will provide a completely isolated low power source for high voltage, high current environments where traditional isolation techniques yield inadequate isolation or prove too cumbersome.

Paper Details

Date Published: 4 May 1999
PDF: 5 pages
Proc. SPIE 3613, Solid State Lasers VIII, (4 May 1999); doi: 10.1117/12.347699
Show Author Affiliations
Matthew Heino, Bechtel Nevada Corp. (United States)
Robert Saethre, Bechtel Nevada Corp. (United States)

Published in SPIE Proceedings Vol. 3613:
Solid State Lasers VIII
Richard Scheps, Editor(s)

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