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Over 200 W average power tunable Raman amplifier based on fused silica step index fiber

: Rekas, Miroslaw; Schmidt, Oliver; Zimer, Hagen; Schreiber, Thomas; Eberhardt, Ramona; Tünnermann, Andreas


Applied Physics. B 107 (2012), No.3, pp.711-716
ISSN: 0340-3793
ISSN: 0721-7269
ISSN: 0946-2171
ISSN: 1432-0649
Journal Article
Fraunhofer IOF ()
fiber optics amplifiers and oscillators; scattering; stimulated Raman; lasers; Raman

A high-power tunable Raman Amplifier is presented. The seed signal (varying from 1118 nm to 1130 nm in wavelength) was generated in a tunable Raman oscillator and fed into the Raman amplification stage. A conversion efficiency of up to 86 % was achieved and a maximum output power of over 200 W was measured. The Raman gain coefficient for the amplifier fiber was measured to be 0.76× 10-hoch14 m/W. Furthermore, the measured output power was compared with values obtained from simple mathematical model and a good agreement up to the highest output power of amplified signal was achieved.