Manuel A. Medina, Sahar Alidousti, Callum McEwan, W. Andrew Clarkson
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引用次数: 0
Abstract
In this paper, we describe external resonant second harmonic generation (SHG) of a multi-axial mode near-infrared (near-IR) source for scaling power in the visible (green) spectral band. By distributing the power across multiple frequencies, we significantly increased the output power obtainable from an ytterbium-doped fibre amplifier before reaching the onset of Stimulated Brillouin Scattering (SBS). Using a near-IR laser with 9 longitudinal modes and an LBO crystal in a bow-tie cavity configuration, up to 15 W at a wavelength of 532 nm was achieved, with a conversion efficiency of 65% with respect to incident power. We discuss strategies for further up-scaling of output power, including increasing the number of axial modes and optimizing the amplifier configuration. Additionally, we highlight the advantages of our approach compared to previously reported high-power SHG systems, demonstrating its potential for future power scaling.
期刊介绍:
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.