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. 2013 Aug 1;38(15):2757-9.
doi: 10.1364/OL.38.002757.

Single-clad Tm-Ho:fiber amplifier for high-power sub-100-fs pulses around 1.9 μm

Nicola Coluccelli  1 , Marco Cassinerio, Paolo Laporta, Gianluca Galzerano
Affiliations

Single-clad Tm-Ho:fiber amplifier for high-power sub-100-fs pulses around 1.9 μm

Nicola Coluccelli et al. Opt Lett. .

Abstract

A Tm-Ho:fiber amplifier based on single-clad geometry is demonstrated for the generation of high-power femtosecond pulses around 1.9 μm. The amplifier is seeded by the low-power Raman soliton generated by an Er:fiber femtosecond laser. Pulse trains at a repetition rate of 250 MHz tunable from 1.84 to 1.92 μm with corresponding powers from 2.6 to 3 W and durations from 80 to 105 fs have been obtained. Beating with a single-frequency Tm laser has shown that the pulse coherence is highly preserved. The overall power fluctuations have been measured to be as low as 0.6%.

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