Abstract
A mode-locked Er-fiber laser using a semiconductor saturable absorber1,2,3 has advantages of self-starting and insensitivity to fiber polarization variation, when compared with either a Figure-8 laser4 or a nonlinear polarization rotation laser.5 We present in this paper a new configuration: a colliding pulse mode-locked (CPM) fiber laser with an optimized ion-implanted semiconductor saturable absorber. The laser produced near transform-limited 0.42 ps pulses and showed less polarization dependence than unidirectional ring lasers using the same components.
© 1995 Optical Society of America
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