Fiber laser device
US-2017162998-A1 · Jun 8, 2017 · US
Optical fiber and laser device
US10620368B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10620368-B2 |
| Application number | US-201716314847-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2017 |
| Priority date | Jul 4, 2016 |
| Publication date | Apr 14, 2020 |
| Grant date | Apr 14, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
An optical fiber, used in a laser device, propagates light having a wavelength of 1060 nm through a core in at least an LP01 mode and an LP11 mode. A difference between a propagation constant of light in the LP01 mode and a propagation constant of light in the LP11 mode is 1850 rad/m or more and 4000 rad/m or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. An optical fiber used in a laser device, comprising: a core, wherein the optical fiber propagates light having a wavelength of 1060 nm through the core in at least an LP01 mode and an LP11 mode, and a difference between a propagation constant of light in the LP01 mode and a propagation constant of light in the LP11 mode is 1850 rad/m or more and 4000 rad/m or less. 2. The optical fiber according to claim 1 , wherein the difference between the propagation constant of light in the LP01 mode and the propagation constant of light in the LP11 mode is 2500 rad/m or less. 3. The optical fiber according to claim 1 , wherein a refractive index profile of the core with respect to a cladding is stepwise, the core has a diameter of 18 μm or more and 28.5 μm or less, and a relative refractive index difference of the core with respect to the cladding is 0.1% or more and 0.2% or less. 4. The optical fiber according to claim 3 , wherein the core has a diameter of 23 μm or more. 5. The optical fiber according to claim 1 , wherein ytterbium is added to the core. 6. A laser device comprising an optical fiber, comprising: a core, wherein the optical fiber propagates light having a wavelength of 1060 nm through the core in at least an LP01 mode and an LP11 mode, and a difference between a propagation constant of light in the LP01 mode and a propagation constant of light in the LP11 mode is 1850 rad/m or more and 4000 rad/m or less. 7. The laser device according to claim 6 , wherein ytterbium is added to the core, and pumping light is incident on the optical fiber.
Assignees
Inventors
Classifications
Amplifier arrangements, e.g. MOPA · CPC title
ytterbium · CPC title
- G02B6/036Primary
core or cladding comprising multiple layers {(multicore optical fibres G02B6/02042; microstructured properties G02B6/02295; omniguide fibres G02B6/023)} · CPC title
- H01S3/067Primary
Fibre lasers · CPC title
Fibre amplifiers (H01S3/06708 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US10620368B2 cover?
- An optical fiber, used in a laser device, propagates light having a wavelength of 1060 nm through a core in at least an LP01 mode and an LP11 mode. A difference between a propagation constant of light in the LP01 mode and a propagation constant of light in the LP11 mode is 1850 rad/m or more and 4000 rad/m or less.
- Who is the assignee on this patent?
- Fujikura Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02B6/036. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 14 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).