Abstract
This work reports the generation of an optical-power tunable 1 μm dual-wavelength fiber laser in co-doped phosphate glass fiber under 970 nm and 808 nm laser diode pumping. A bidirectional free-space pump laser setup was adopted. An optical-power tunable dual-wavelength laser can be easily realized by the control of 808 nm pump power magnitude. Based on a series of laser tests under different pump conditions and theoretical calculation of the energy transfer efficiency, the control mechanism was found to be the stimulated emission modulation of on lasing. This property is helpful to enhance the knowledge of the co-doping system.
© 2017 Optical Society of America
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