Abstract

A compact single-frequency 1060nm fiber laser based on a high-power semiconductor optical amplifier (SOA) has been proposed and demonstrated with over 40nm wavelength tuning range. The inhomogeneous gain-broadening feature of the SOA and the unpumped ytterbium-doped fiber-based saturable absorber contribute to the single longitudinal mode lasing of the fiber laser. The maximum 3dBm output power can be obtained with the optical signal to noise ratio larger than 50dB. Stable single-frequency operation can be maintained more than 1h with negligible power fluctuations and low relative intensity noise.

© 2009 Optical Society of America

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