Pulse light manipulate output state of 3.6 μm fluoride fiber laser in DWP system

Abstract

Strong driving with light offers the potential to manipulate the properties of fluoride fiber on absorbed characteristics. A 3.6 µm continuous wave (CW) fiber laser pumped by the 1973 nm CW fiber laser and the 976 nm pulsed diode sources was demonstrated in dual-wavelength pumping system. The output state could be changed from pulse to CW by controlling the repetition frequency and pumping power of the 976 nm pulsed pump source. By optimizing the pumping parameter, a maximum output power of 1.2 W was achieved for the 3.6 µm CW fiber laser. The demonstrated method shows a new solution for controlling output state of 3.6 µm fiber lasers, which can be used to achieve high power CW laser output. And it would be helpful for better understanding the interaction process of particle transition in dual-wavelength pumping system.