Abstract
We present a linear cavity type of Erbium-Doped fiber oscillator designed for high stability femtosecond pulse production. Commercial Semiconductor Saturable Absorber Mirrors (SESAM) is applied. To avoid environment unstable effects which affects on polarization state of fiber, standard faraday rotator is used in this cavity. Also the experimental study of ring femtosecond fiber laser is compared with linear once. The linear cavity is more stable than ring configuration. With addition of Erbium-Doped fiber amplifier, the output power 100mW with 910 fs and 45.5 MHz repetition rate is acquired without any pulse compressing.
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