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Frequency doubling of multimode diode-pumped graded-index fiber Raman lasers

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Abstract

Frequency doubling of multimode diode-pumped graded-index fiber lasers generating high-quality (M2=2–2.5) beam at 954 and 976 nm is studied. Efficient generation in PPLN crystals of second harmonics at 477 and 488 nm has been demonstrated.

© 2019 The Author(s)

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