Figure 2From: Conception, modelling, and characterization of a fiber amplifier with a simple and easy-to-repair configuration intended for the use in harsh environmentsComponents of the fabricated YDFA, comprised of (a) the pump LD on a peltier stage and the YDF contained in an aluminum box, and (b) the seed laser generated with a Mephisto LD and coupled into an optical fiber. (c) shows the inside of the box containing a fiber-based isolator and a combiner (located at the center of the box) along with the YDF itself. (d) shows the collimator attached at the end of the YDFBack to article page