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High energy, ultrashort pulse ring fiber laser having a linear dispersion compensator with chirped Bragg gratings
High energy, ultrashort pulse ring fiber laser having a linear dispersion compensator with chirped Bragg gratings
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机译:高能,超短脉冲环形光纤激光器,具有线性comp补偿器和Bra光栅
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摘要
A high energy, ultra short pulse ring fiber laser is provided that includes a passively mode locked, all optical fiber laser formed from a closed loop of optical fiber doped with erbium or other rare earth metal, a pump light source optically coupled to the loop of optical fiber, and a linear dispersion compensator that includes a pair of chirped Bragg gratings with substantially equal but opposite sign dispersion. The difference in dispersion between the pair of chirped Bragg gratings is adjusted so that it is substantially equal and opposite to the dispersion generated in the loop of optical fiber. The linear dispersion compensator includes a tuner which can individually stretch or compress the pair of chirped fiber Bragg gratings such that one of the gratings can be adjusted to cancel out the dispersion of the ring laser cavity, while the other grating is adjusted to eliminate third order dispersion of the cavity.
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