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US 10,535,975 B2Granted
High power sub-400 femtosecond MOPA with solid-state power amplifier
AssigneeCoherent, Inc.
InventorsAndrei Starodoumov, Norman Hodgson
Life of this patent
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Abstract
Laser-apparatus includes a fiber-MOPA arranged to deliver amplified seed optical pulses having a wavelength of about 1043 nanometers to a multi-pass ytterbium-doped yttrium aluminum garnet solid-state optical amplifier for further amplification.
Claims11
Laser apparatus, comprising:
- a fiber-laser oscillator delivering optical pulses having a first pulse-duration, the pulses having a center-wavelength between 1038 nanometers and 1052 nanometers;
- a pulse-stretcher arranged to stretch the duration of the optical pulses to a second pulse-duration longer than the first pulse-duration;
- at least one fiber-amplifier arranged to amplify the stretched optical pulses;
- a solid-state multi-pass amplifier including a gain-element made of ytterbium-doped yttrium aluminum garnet having a peak-gain wavelength of about 1030 nm, arranged to further amplify the amplified stretched optical pulses from the fiber-amplifier;
- and
- a pulse-compressor arranged to reduce the duration of the further-amplified optical pulses from the solid-state multi-pass amplifier to a duration of less than about 400 femtoseconds.
3 more elements
Dependencies are inferred from the claim text.