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US 7,453,913 B2Granted
Resonant Fabry-Perot semiconductor saturable absorbers and two photon absorption power limiters
AssigneeImra America, Inc.
InventorsMin Jiang, Donald J. Harter, Gregg D. Sucha, Martin E. Fermann
Life of this patent
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Abstract
An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw modelocked. By using both an R-FPSA and a TPA, the Q-switched modelocked behavior of a fiber laser is observed to evolve into cw modelocking.
Claims9
A method of generating cw mode-locked laser energy, comprising:
- generating Q-switched modelocking pulses, and
- automatically evolving cw modelocking from said Q-switched modelocking pulses.
A method of generating cw mode-locked laser energy, comprising:
- generating Q-switched mode locked pulses to yield cw mode-locked laser pulses, and suppressing said Q-switched mode locked pulses.
Dependencies are inferred from the claim text.