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100-W single-frequency master-oscillator fiber power amplifier

: Liem, A.; Limpert, J.; Zellmer, H.; Tünnermann, A.


Optics Letters 28 (2003), No.17, pp.1537-1539
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()
fiber optic and optical communication; fiber optic amplifier and oscillator; nonlinear optics; fiber

We report the efficient generation of 100-W single-frequency radiation with diffraction-limited beam quality at the 1064-nm wavelength by use of a master-oscillator fiber power-amplifier system, consisting of a diode-pumped monolithic nonplanar ring laser as the master oscillator and an Yb-doped large-mode-area fiber as the power amplifier. The emission spectrum, the intensity noise behavior, and further power-scaling possibilities to the 200 W level, which are determined by the threshold of stimulated Brillouin scattering in the fiber amplifier, are discussed.