Erbium-doped Fiber Amplifier for Narrow-Linewidth Pulse Laser is a special fiber amplifier for narrow-linewidth single-frequency nanosecond pulses. The spectral linewidth of the input laser pulse can be as low as kHz, which can effectively suppress nonlinear effects while achieving high pulse energy output, and single-mode or polarization-maintaining fiber output. It can be used in distributed sensing, Doppler lidar and other applications.
