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High-power ytterbium:erbium (yb:er) fiber laser system with 1.02 -1.06 [mu]m clad pumping scheme

A technology of fiber lasers and pump lasers, applied in lasers, laser components, phonon exciters, etc., can solve problems such as intensification

Pending Publication Date: 2021-02-23
IPG PHOTONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, higher parasitic generation in the 1 μm wavelength range is exacerbated if the latter condition is not met

Method used

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  • High-power ytterbium:erbium (yb:er) fiber laser system with 1.02 -1.06 [mu]m clad pumping scheme
  • High-power ytterbium:erbium (yb:er) fiber laser system with 1.02 -1.06 [mu]m clad pumping scheme
  • High-power ytterbium:erbium (yb:er) fiber laser system with 1.02 -1.06 [mu]m clad pumping scheme

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Embodiment Construction

[0032] Figure 8 An inventive schematic diagram of a MM Er fiber laser or amplifier 20 based on a double clad Yb:Er doped fiber 22 placed between MM wavelength reflectors 24 is shown. in the resonance cavity. Contrary to known techniques, Er fiber lasers are constructed from components such as Fabry-Perot Yb fiber lasers operating at the pump wavelength of 1020-1060 nm or neodymium (Nd)-doped fiber lasers at the pump wavelength of 1050-1060 nm. The pump source performs cladding pumping to output signal light with a wavelength of about 15xxnm. The pumping arrangement can be configured according to side pumping or end pumping techniques, allowing unidirectional pumping in one of the opposite directions of light propagation, or bidirectional pumping as shown.

[0033] pumped by one or more MM Yb fiber lasers 26 at a pump wavelength of 1028 nm to Figure 8 The exemplary optical fiber 22 is pumped sideways to pump the optical fiber 22 . Fiber 22 has a 50 μm MM core doped with Y...

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Abstract

A fiber laser is configured with a double clad fiber with a core doped with ions of Erbium (Er+3) and Ytterbium (Yb+3). At least two spaced apart high and low reflection mirrors flank the core and define a resonant cavity therebetween. The fiber laser further includes a pump laser outputting light in a 1.02 -1.06 [mu]m wavelength range which is coupled into the Yb:Er doped double clad fiber. A fiber amplifier includes a double clad fiber with a core doped with ions of Erbium (Er+3) and Ytterbium (Yh+3), and a pump laser generating radiation at a pump wavelength in a 1.02 -1.06 [mu]m wavelengthrange, a pump laser outputting light in a 1.02 -1.06 [mu]m wavelength range coupled into the Yb:Er doped double clad fiber. The disclosed fiber laser and fiber amplifier each have a significantly higher lasing threshold in the 1 [mu]m wavelength range than the threshold of the known schematics operating at a 9xx nm pump wavelength.

Description

technical field [0001] The present disclosure relates to a high power Yb:Er fiber laser system that suppresses the occurrence of Yb lasing in the wavelength range of 1 micron (nm). In particular, the present invention relates to high power fiber oscillators and amplifiers based on Yb:Er doped fibers in the wavelength range of 1020-1060 nm, wherein the Yb:Er doped fibers are cladding pumped. Background technique [0002] There is a need for high power, practical and low cost Erbium (Er) doped double clad fiber laser systems operating in the 1.5-1.6 μm wavelength range. Laser operation in this wavelength range is attractive for several reasons: it is well suited for pumping thulium (Tm) laser systems, mid-infrared parametric amplifiers, and oscillators; moreover, it has low fiber loss, making large High-power Er lasers have great advantages in many scientific and engineering applications. [0003] The most common lasing transitions in Er are concentrated around 1550 nm. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067
CPCH01S3/1618H01S3/1608H01S3/0675H01S3/094042H01S3/09415H01S3/09408H01S3/094007H01S3/1616H01S3/06754H01S3/1698H01S3/094061H01S3/175H01S3/094019H01S3/06733H01S3/094011
Inventor 艾廉·扎特斯蒂夫费多尔·谢尔比纳安德瑞·马史金
Owner IPG PHOTONICS CORP