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Beam Sources with Tailored Beam Quality and Spectral Characteristics - Photonics West 2014

In this paper we report on the further progress of fiber coupled high power diode lasers in the visible spectral range with regard to beam quality and spectral characteristics. Improved beam shaping concepts allow coupling of red and blue diode lasers into smaller fibers. For medical applications beam sources with narrow wavelength distribution in the blue spectral region were developed. Modules up to 100W in a 400μm NA0.22 fiber were realized. Progress in manufacturing technologies allows for coupling of more than 25W into a 200μm NA0.22 fiber in the blue wavelength range.

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