Rare earth ion doped CW cascade fiber laser

Details Rare earth ion doped CW cascade fiber laser Rare earth ion doped CW cascade fiber laser

1992-10-30

1994-05-17

Bovernick, Rodney B.

Coherent light generators

Optical fiber laser

372 70, 372 71, 372 91, H01S 307, H01S 3094

Patent

active

053134770

ABSTRACT:
A continuous wave(CW) activator ion doped fiber laser is presented which lases at a normally self-terminating laser transition at a slope efficiency greater than that achieved by a self-terminating fiber laser. Two laser transitions, one corresponding to a self-terminating laser transition and the other to a transition out of the lower level of the self-terminating transition, are simultaneously stimulated in the activator ion doped fiber. Through simultaneous lasing of the two wavelengths corresponding to these transitions, the lower level of the self-terminating transition is sufficiently depopulated so that CW operation is achieved.

REFERENCES:
patent: 5084880 (1992-01-01), Esterowitz
patent: 5084890 (1992-01-01), Brierley
patent: 5226049 (1993-07-01), Grubb
Quimby et al., "Continuous-wave lasing on a self-terminating transition", plied Optics 28 (1) 14-16 (Jan. 1, 1989).
Carter et al., "Thulium-Doped Fluorozirconate Fiber Lasers Operating at Around 0.8, 1.47, 1.9 and 2.3 .mu.m Pumped at 0.79 .mu.m", OSA Proceedings on Advanced Solid State Lasers, 1991, 10 218-221 (1991) no month available.

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