High power three level fiber laser and method of making same

Details High power three level fiber laser and method of making same High power three level fiber laser and method of making same

1997-11-14

2000-02-29

Healy, Brian

Coherent light generators

Optical fiber laser

385 28, 385123, 385126, 385127, 65385, 359341, H01S 330, H01S 300, G02B 626, C03B 37023

Patent

active

06031849&

ABSTRACT:
A rare earth doped fiber for use in a fiber laser is presented. The fiber laser uses a single stripe broad area pump diode permits Yb lasing in its 3-level transition at 980 nm preferentially over the 1010 nm 4-level transition. The present fiber laser is characterized by a dual cladding fiber geometry which includes an inner rare earth doped single mode core. There is an inner cladding designed to be a multimode pump core for the pump light. The pump core is followed by a final cladding to confine the pump radiation. The present laser matches the larger/outer mode field to that of a single stripe broad area diode in order to maximize the pump intensity.

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