Transformation of the supercontinuum spectra by the Ho-doped fiber amplifier

Abstract

A multicascade femtosecond supercontinuum source based on a holmium-doped fiber amplifier was demonstrated. Maximum average power was approximately 400 mW and concentrated in the range from 1950 to 2150 nm. The shape of the output spectrum was controlled by the pump of the holmium-doped fiber amplifier.

Supercontinuum generation beyond 2 µm in GeO2fiber: comparison of nano- and femtosecond pumping

“…To build the femtosecond pump source we used master oscillator configuration based on the commercially available femtosecond Er-doped fiber laser produced by the Avesta-Project [15] and a fiber amplifier based on the GTWave cladding pumped Er-doped fiber [16]. The laser system provided a train of the pulses with duration from 300 to 500 fs at a frequency of 58 MHz and average power up to 500 mW.…”

Analysis of the effects of macrobend losses in broadband spectrum filtering

“…Other authors have achieved SC sources with a spectral width from 850-2500 nm by using highly nonlinear fiber (HNLF) [10], and a low-noise SC spectrum with controlled intensity distribution over the range 1-2 μm by using hybrid HNLF [11]. Another alternative to SC generation is based on a holmium-doped fiber amplifier, concentrating an average power of 400 mW in the range from 1950-2150 nm [12].…”