Nanosecond Pulse Fiber Laser without Any Controlling Devices

Abstract

All fiber type nanosecond pulse ring laser oscillator consists of simple components. In the cavity, active or passive components such as an acousto-optic modulator or saturable absorber were not inserted. The fiber laser can produce 1-ns pulse train without the devices for polarization control and compensation of birefringence. Nanosecond fiber pulse laser has a possibility that can be widely applied to industry and scientific tool.