Fibre laser
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United States of America Patent
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N/A
Issued Date -
Apr 22, 2004
app pub date -
Oct 27, 2003
filing date -
Dec 21, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A Fibre-based optical source comprises a high power laser diode stack as a pump source, the output of which is shaped into an intense beam of elongate cross-section by use of focusing and light concentrating elements. The beam is used to cladding pump a fibre having an inner cladding also with elongate cross-section, to provide high efficiency pumping. To achieve high output powers with a good mode quality, an overall large core ara is provided by configuring the fibre to have a plurality of individual cores doped with active ions and arranged within the inner cladding in a linear array. Each individual core is configured for single mode operation, so that a plurality of single mode lasers outputs are generated, which can be combined to produce one single mode high power output. The source may also be configured as a laser or as an amplifier.
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