Linearly polarized, $3.35\mathrm{W}$ narrow-linewidth, $1150\mathrm{nm}$ fiber master oscillator power amplifier for frequency doubling to the yellow

Abstract

A high-power linearly polarized Yb-doped silica fiber master oscillator power amplifier at $1150\mathrm{nm}$ is reported. It produced $3.35\mathrm{W}\mathrm{cw}$ and $2.33\mathrm{W}$ of average power in $1\mathrm{\mu }\mathrm{s}$ pulses at a $100\mathrm{kHz}$ repetition rate, both with $8\mathrm{pm}$ linewidth. This is the first report, to the best of our knowledge, of a high-power Yb-doped fiber amplifier at a wavelength longer than $1135\mathrm{nm}$. The pulsed output was frequency doubled in a bulk periodically poled near-stoichiometric ${\mathrm{LiTaO}}_3$ chip to generate $976\mathrm{mW}$ of average power at $575\mathrm{nm}$ with an overall system optical-to-optical efficiency of 9.8% with respect to launched pump power.

© 2007 Optical Society of America

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