Mode-locked multimode fiber laser pulse source
AssigneeImra America, Inc.
InventorMartin E. Fermann
Life of this patent
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Abstract
A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.
Claims4
A method of generating ultra-short pulses, comprising:
- providing a length of optical fiber doped with a gain medium;
- repeatedly passing signal light through said length of optical fiber to produce said ultra-short pulses;
- and
- providing sufficient stored energy within said gain medium to amplify said pulses to a peak power above 1 KW.
Dependencies are inferred from the claim text.