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Silica waveguides for upconversion lasers 发明申请

2023-02-03 1980 448K 0

专利信息

申请日期 2025-07-10 申请号 GB0521072
公开(公告)号 GB2427748A 公开(公告)日 2007-01-03
公开国别 GB 申请人省市代码 全国
申请人 UNIV SOUTHAMPTON
简介 An optical up-conversion device comprises an optical waveguide having an optical core region at least partially surrounded by an air cladding, wherein the core region comprises silica doped with a rare-earth element. The ultraviolet-hard silica core provides an excellent photodarkening-resistant host for an upconversion dopant such as thulium or erbium, whilst the air cladding ensures optical confinement. A particularly suitable arrangement for planar geometries comprises a supported silica membrane with a ridge waveguide 22. The supports 25 may be made from metals, dielectrics or silicon.


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