7.5 W blue light generation at 452 nm by internal frequency doubling of a continuous-wave Nd-doped fiber laser

7.5 W blue light generation at 452 nm by internal frequency doubling of a continuous-wave Nd-doped fiber laser

We present the first frequency-doubled neodymium-doped fiber laser generating multi-watt CW power near 450 nm. A bow-tie resonator incorporating a LBO nonlinear crystal is integrated within a Nd-doped fiber laser emitting near 900 nm. This scheme achieves an IR to blue conversion efficiency close to...

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Veröffentlicht in:Optics express 2018-04, Vol.26 (8), p.10000-10006
Hauptverfasser: Leconte, Baptiste, Gilles, Hervé, Robin, Thierry, Cadier, Benoit, Laroche, Mathieu
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container_end_page 10006
container_issue 8
container_start_page 10000
container_title Optics express
container_volume 26
creator Leconte, Baptiste
Gilles, Hervé
Robin, Thierry
Cadier, Benoit
Laroche, Mathieu
description We present the first frequency-doubled neodymium-doped fiber laser generating multi-watt CW power near 450 nm. A bow-tie resonator incorporating a LBO nonlinear crystal is integrated within a Nd-doped fiber laser emitting near 900 nm. This scheme achieves an IR to blue conversion efficiency close to 55% without any active control of the internal resonant cavity. As a result, up to 7.5 W of linearly-polarized blue power is generated, with beam quality factors M ~1.0 and M ~1.5. A simple numerical model has been developed to optimize and analyse the IR to blue conversion efficiency in the resonant cavity. Performance limitations and prospects for further improvements are discussed.
doi_str_mv 10.1364/OE.26.010000
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Physics
title 7.5 W blue light generation at 452 nm by internal frequency doubling of a continuous-wave Nd-doped fiber laser
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