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5 March 2021 Efficient pulsed Nd-doped fiber laser at 905 nm and frequency conversion to 452nm and 226nm
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Abstract
We present in this work, the development of a nanosecond pulsed Master-Oscillator Power-Amplifier (MOPA) laser system near 905 nm based on the 3-level transition of Neodymium using a novel low NA polarization-maintaining Nd-doped silica fiber with a 30µm core and 130µm cladding. The MOPA delivered up to 24 W of average power (0.6 mJ energy per pulse) with good beam quality (M²~1.4). Cascaded LBO and BBO crystals are used respectively for second-harmonic generation and fourth-harmonic generation, giving respectively average output powers of 4.9W at 452nm (conversion efficiency of 20%) and 550mW at 226nm (conversion efficiency of 10%).
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kilian Le Corre, Hervé Gilles, Sylvain Girard, Alexandre Barnini, Louanne Kervella, Pascal Guitton, Thierry Robin, Giorgio Santarelli, and Mathieu Laroche "Efficient pulsed Nd-doped fiber laser at 905 nm and frequency conversion to 452nm and 226nm", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 116651M (5 March 2021); https://doi.org/10.1117/12.2577661
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KEYWORDS
Fiber lasers

Frequency conversion

Deep ultraviolet

Crystals

Harmonic generation

Pulsed laser operation

Oscillators

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