Tunable laser in the green, red and near IR by frequency mixing of a dual wavelength Er/Yb co-doped fiber laser

We report a tunable laser source emitting in the visible (530 nm, 630 nm) and the near infrared (775 nm, 1060 nm, and 1550 nm) regions by frequency summation of a dual wavelength Er/Yb co-doped fiber laser.