By changing the air-filling fraction of the photonic-crystal fibers used in white-light supercontinuum sources, the traditional "blue deficiency" of such sources is eliminated, resulting in true white-light supercontinuum generation. In the past decade, the invention of highly nonlinear photonic-crystal fibers (PCFs) and the development of compact, high-power ultrafast fiber lasers have enabled turnkey white-light laser sources with powers approaching 10 W and spectral power densities as high as 10 mWm.
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