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Opt Express. 2012 Feb 27;20(5):5683-8. doi: 10.1364/OE.20.005683.

2 µm femtosecond fiber laser at low repetition rate and high pulse energy.

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  • 1PolarOnyx, Inc., 2526 Qume Drive, Suite 17 & 18, San Jose, California 95131, USA.


In the paper, a 2 µm high energy fs fiber laser is presented based on Tm doped fiber at a low repetition rate. The seed laser was designed to generate pulse train at 2 µm at a pulse repetition rate of 2.5 MHz. The low repetition rate seed oscillator eliminated extra devices such as AO pulse picker. Two-stage fiber amplifier was used to boost pulse energy to 0.65 µJ with chirped pulse amplification.

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