Illustration and spectral effect of gradient thickness nano-films on exposed core fibers (IMAGE)
Caption
(a) Illustration of the nano-film enhanced exposed core fiber. The top inset is a scanning electron micrograph image of the cross-section of the fiber and the bottom inset shows the schematic cross-section of the core region. A red dashed circle marks the core. (b) Improvement of the measured spectral output of a fiber having a steep nano-film gradient of ∼1.1 nm/mm (59-144 nm thickness, 68 mm fiber length, pink) compared to one with almost uniform nano-film thickness (62-70 nm thickness, 70 mm fiber length, purple) and similar starting thicknesses. The central pump wavelength is indicated by the vertical dashed line.
Credit
by Tilman Lühder, Henrik Schneidewind, Erik Schartner, Heike Ebendorff-Heidepriem, and Markus A. Schmidt
Usage Restrictions
Credit must be given to the creator.
License
CC BY