All-fiber, single-frequency, and single-mode Er^3+:Yb^3+ fiber amplifier at 1556     nm core-pumped at 1018     nm

Emerging applications, such as gravitational wave astronomy, demand single-frequency lasers with diffraction-limited emission at 1.5   μ m. Fiber amplifiers have greatly evolved to fulfill these requirements. Hundreds of watts are feasible using large-mode-area and specialty fibers. ...

Source: Optics Letters - May 25, 2018 Category: Physics Authors: Omar de Varona Michael Steinke J ö rg Neumann Dietmar Kracht Source Type: research