Non-resonant power-efficient directional Nd:YAG ceramic laser using a scattering cavity

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<jats:title>Abstract</jats:title><jats:p>Non-resonant lasers exhibit the potential for stable and consistent narrowband light sources. Furthermore, non-resonant lasers do not require well-defined optics, and thus has considerably diversified the available types of laser gain materials including powders, films, and turbid ceramics. Despite these intrinsic advantages, the practical applications of non-resonant lasers have been limited so far, mainly because of their low power efficiency and omnidirectional emission. To overcome these limitations, here we propose a light trap design for non-resonant lasers based on a spherical scattering cavity with a small entrance. Using a porous Nd<jats:sup>3+</jats:sup>:YAG ceramic, directional laser emission could be observed with significant enhancements in the slope efficiency and linewidth (down to 32 pm). A theoretical model is also developed to describe and predict the operation characteristics of proposed non-resonant laser.</jats:p>
Publisher
Nature Publishing Group
Issue Date
2021-12
Language
English
Article Type
Article
Citation

Nature Communications, v.12, no.1, pp.8

ISSN
2041-1723
DOI
10.1038/s41467-020-20114-2
URI
http://hdl.handle.net/10203/281658
Appears in Collection
PH-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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