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A 980-nm Yb-doped fiber MOPA source and its frequency doubling

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Original languageEnglish
Pages (from-to)1032-1034
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number4
Publication statusPublished - Apr 2004
Externally publishedYes
Publication typeA1 Journal article-refereed


A continuous-wave (CW) master oscillator-power amplifier (MOPA) fiber source, tunable around 978 run, was frequency-doubled to 488.7 nm. Both the laser and the amplifier were made with cladding-pumped jacketed air-clad Yb-doped fibers. The MOPA generated up to 2.7 W of power in an output beam with an M-2 value of 1.8. This was frequency-doubled in a periodically poled potasium titanyl phosphate crystal at room temperature, in a single-pass configuration. The generated blue light had a CW power of 18.1 mW, a nearly Gaussian spatial intensity profile, and an M-2 value of 1.7.

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