Mode-locked fiber laser

Details Mode-locked fiber laser Mode-locked fiber laser

1989-04-19

1991-04-16

Gonzalez, Frank

Coherent light generators

Optical fiber laser

372 18, 372 94, H01S 330

Patent

active

050088874

ABSTRACT:
A mode-locked fiber laser having a length greater than 10 meters is equipped with an intracavity shutter or "mode-locking" device. The intracavity shutter is a broad bandwidth modulator which allows fast shutter on and off speeds, allowing short on times as well as short on-off and off-on transition times. The fiber and the modulator may be integrated. The fiber is comprised of a material doped with an active species having a long lifetime upper state, wherein the upper state lifetime is longer than the round trip time of a pulse through the fiber. The laser may be configured as either a linear laser or a ring cavity laser. The present invention allows short pulse widths with high pulse energies.

REFERENCES:
patent: 3497828 (1967-12-01), Telk et al.
patent: 4635263 (1987-01-01), Mollenauer
patent: 4637025 (1987-01-01), Snitzer et al.
patent: 4728168 (1988-03-01), Alferness et al.
patent: 4835778 (1989-05-01), Kafka et al.

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