Fiber laser
AssigneeFujikura Ltd.
InventorsRyoichi Nishimura, Kentaro Ichii
Life of this patent
Estimating the term…
Abstract
A fiber laser includes: a gain fiber having a core doped with Yb; and a forward pumping light source group that generates forward pumping light that is inputted into the gain fiber and belongs to a 976-nm band. An absorption amount of the forward pumping light in a section of the gain fiber, calculated according to ∫P(λ)A(λ)dλ, is greater than or equal to 253 W and less than or equal to 1100 W where P(λ) [W] is a power spectrum of the forward pumping light, and A(λ) [%/m] is an absorption rate spectrum of the doped Yb. A length of the section is 1 m and includes an end face of the gain fiber on which the forward pumping light is incident.
Claims10
A fiber laser comprising:
- a gain fiber having a core doped with Yb;
- and
- a forward pumping light source group that generates forward pumping light that is inputted into the gain fiber and belongs to a 976-nm band, wherein
- an absorption amount of the forward pumping light in a section of the gain fiber, calculated according to ∫P(λ)A(λ)dλ, is greater than or equal to 253 W and less than or equal to 1100 W where
- P(λ) [W] is a power spectrum of the forward pumping light, and
- A(λ) [%/m] is an absorption rate spectrum of the doped Yb, and
- a length of the section is 1 m and includes an end face of the gain fiber on which the forward pumping light is incident.
A fiber laser comprising:
- a gain fiber having a core doped with Yb;
- and
- a forward pumping light source group that generates forward pumping light that is inputted into the gain fiber and belongs to a 976-nm band, wherein
- an actually measured value of an absorption amount of the forward pumping light in a section of the gain fiber, is not less greater than or equal to 253 W and less than or equal to 1100 W, and
- a length of the section is 1 m and includes an end face of the gain fiber on which the forward pumping light is incident.
Dependencies are inferred from the claim text.