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US 11,769,980 B2Granted
Amplification fiber and laser beam emitting apparatus
AssigneesToyota Jidosha Kabushiki Kaisha, Toyota School Foundation
InventorsTomoya Okazaki, Kazuya Saito, Edson Haruhico Sekiya
Life of this patent
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Abstract
An amplification fiber which can generate a laser beam in a visible region even when a silica glass is used as a base material of a core of the amplification fiber is realized. An amplification fiber according to an embodiment of the present disclosure includes a core configured to generate a laser beam from an excitation beam in a visible region, and a cladding surrounding the core. The core is composed of a core material including Dy, one or more elements selected from Al, Ge, and P, and a silica glass.
Claims8
An amplification fiber comprising:
- a core configured to generate a laser beam from an excitation beam in a visible region;
- and
- a cladding surrounding the core, wherein
- the core is composed of a core material comprising:
- 0.01 to 2 wt % Dy;
- 0.1 to 2 wt % Al,
- 1 to 10 wt % Ge, and
- 0 to 6 wt % P;
- and
- a silica glass,
- wherein atomic ratios of the core material are Al/Dy:
- 5.4 to 12.6 and Ge/Dy:
- 6.0 To 58.6.
10 more elements
Dependencies are inferred from the claim text.