Mid-infrared (Mid-IR) fiber lasers and amplifiers have gained significant attention due to their potential applications in various fields, including spectroscopy, sensing, and materials processing. However, the efficient coupling of pump light into these Mid-IR fibers remains a critical challenge. Traditional pump combiners often involve complex fabrication processes and can suffer from low coupl…
It is shown with a numerical example that choosing an overly long active fiber for a fiber laser can have quite interesting consequences: not only a reduction of the power conversion efficiency, but also strong ASE, which may even suppress laser operation.
