Glass fiber laser system using U-doped crystal Q-switch

Details Glass fiber laser system using U-doped crystal Q-switch Glass fiber laser system using U-doped crystal Q-switch

1996-01-22

1997-07-29

Lee, John D.

Coherent light generators

Particular beam control device

Q-switch

372 6, 372 40, 372 11, H01S 311

Patent

active

056527560

ABSTRACT:
A glass fiber laser system includes a laser resonator cavity having a resonant path and an erbium-doped glass fiber lasing element with an output of from about 1.5 to about 1.6 micrometers within the laser resonator cavity. A light source directed into an input end of the glass fiber lasing element optically pumps the lasing element to emit light. A passive Q-switch lies along the resonant path within the laser resonator cavity. The Q-switch is formed of a host material having a concentration of uranium ions therein, so as to be a saturable absorber of the light emitted by the lasing element. The Q-switch is preferably a uranium-doped fluoride crystal such as U:CaF.sub.2, U:SrF.sub.2, or U:BaF.sub.2.

REFERENCES:
patent: 3754190 (1973-08-01), Cross
patent: 4682336 (1987-07-01), Hendrix et al.
patent: 5422899 (1995-06-01), Freiberg et al.
patent: 5557624 (1996-09-01), Stultz et al.
Stultz et al, "U(4+):SrF2 Efficient Saturable Absorber Q Switch for the 1.54 .mu.m Erbium:Glass Laser", Applied Physic Letters, vol. 64, No. 8, Feb. 1994, pp. 948-950.

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