Short-length large-mode-area photonic crystal fiber laser operating at 978 nm

Abstract

The laser performance of a short-length Yb -doped rod-type photonic crystal fiber (PCF) laser is studied experimentally both in the three-level scheme and quasi-four-level scheme in this contribution. In the free oscillation mode, the rod-type PCF laser produce 13.6 W output power on the quasi-four-level system with center wavelength of 1030 n m. The laser operating on the three-level system is obtained with the introduction of specialized feedback around the 976 n m rad iation. Up to 7 W output power is generated with wavelength centered in 978 n m.