High Peak Power Er-doped Tapered Fiber Amplifier Topics: Fiber Lasers and Applications; Fiber Optics devices; Fiber Optics Technology; High Intensity Lasers and High Field Phenomena; Nonlinear Optics and Photonics In Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology PHOTOPTICS - Volume 1, 105-109, 2018 , Funchal, Madeira, Portugal