Measuring photodarkening from single-mode ytterbium doped silica fibers.

@article{Koponen2006MeasuringPF,
  title={Measuring photodarkening from single-mode ytterbium doped silica fibers.},
  author={J. Koponen and M. S{\"o}derlund and H. Hoffman and S. Tammela},
  journal={Optics express},
  year={2006},
  volume={14 24},
  pages={
          11539-44
        }
}
Photodarkening is recognized as a potentially important limiting factor on the lifetime and reliability of many Yb-doped fiber lasers and amplifiers. In particular, a photodarkening process attributed to the formation of photoinduced structural transformations can induce excess loss in the doped glass core of the fiber, resulting in reduced output power efficiency. Yet, quantifiable measurement techniques of this phenomenon have been scarce in the literature to date. Here we present a fast… Expand
View PDF
187 Citations
Highly Influential Citations
5
Background Citations
43
Methods Citations
12

187 Citations

Citation Type

Citation Type

Photodarkening measurements in large mode area fibers
Yb-doped fibers are widely used in applications requiring high average output powers and high power pulse amplification. Photodarkening is one limiting factor in these fibers. In this paper,… Expand
Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection.
TLDR
This paper demonstrates for the first time that Al-silicate Yb-doped fibers with high-inversion and doping concentration above 1 wt% can be successfully used by implementing a simple optical bleaching scheme and provides a comprehensive picture of main parameters affecting photobleaching performance. Expand
Photodarkening-Induced Absorption and Fluorescence Changes in Yb Fibers
We study the photodarkening effect in a double clad ytterbium-doped silica fiber fabricated by modified chemical vapor deposition and solution doping. A common measurement technology for… Expand
Modeling the photodegradation of large mode area Yb-doped fiber power amplifiers
Photodarkening is presently a major concern for the long term reliability and efficiency of high power Yb-doped fiber lasers and amplifiers. This phenomenon has been associated with the formation of… Expand
Improved setup and procedure for benchmarking of photodarkening in ytterbium doped silica fibers
This paper presents a new setup and a corresponding procedure for the accurate measurement of photodarkening in ytterbium doped fibers. The core-pumping scheme enables the use of short samples and a… Expand
Photodarkening rate in Yb-doped silica fibers.
TLDR
A seventh-order dependence of the PD rate on the excited-state Yb concentration for two different fibers implies that PD of a Yb-doped fiber source fabricated using a particular fiber will be strongly dependent on the configuration of the device. Expand
Investigation on photodarkening in Ytterbium-doped fibers for high performance fiber devices
Photodarkening (PD) is the phenomenon that induces optical power loss, related to material defects activated in a silica glass, when the glass is irradiated at wavelengths resonant to the defects.… Expand
Time Response Characteristics of Photodarkening-Induced Loss in Yb-Doped Fiber Amplifier
  • Y. Feng, C. Codemard, +7 authors J. Nilsson
  • Materials Science
  • 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
  • 2019
Photodarkening (PD) can degrade the output power and increase the thermal load in Yb-doped fiber lasers and amplifiers by increasing the propagation loss in the core [1,2]. PD can be attributed to… Expand
Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers.
TLDR
The thermal bleaching process of photodarkening-induced loss in ytterbium-doped fibers is studied to derive the activation energy associated with thermal recovery of the induced loss to prephotodarkened state. Expand
Measuring photodarkening from Ytterbium-doped fiber amplifier at 1064 nm wavelength emission
In this paper, photodarkening effect in Ytterbium doped fiber (YDF) amplifier is experimentally investigated and analyzed. The experimental measurement on such effect is conducted on an YDF amplifier… Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 14 REFERENCES
Highly nonlinear near-resonant photodarkening in a thulium-doped aluminosilicate glass fiber.
TLDR
The result shows that absorption of infrared light of moderate intensity can lead to photoionization in rare-earth-doped glass, provided that a multiphoton stepwise excitation channel exists. Expand
Lifetime quenching in Yb-doped fibres
Abstract We have discovered that in ytterbium-doped silica fibres of different compositions the excited state lifetime of a fraction of the Yb ions (between 1% and over 90%) is quenched to a very… Expand
Ultraviolet-induced distributed-feedback gratings in Ce(3+) -doped silica optical fibers.
Nondegenerate four-wave mixing was used to write permanent distributed-feedback refractive-index gratings in a Ce3+-doped (80 parts in 106), aluminosilicate, single-mode glass optical fibser at 300 K… Expand
Linear and Nonlinear Photoionization of Silicate Glasses
An extensive use of powerful laser radiation in such areas as optical communication and data storage, laser processing, photolithography, etc. attracts more and more attention to the problems of both… Expand
Characteristics of laser-induced gratings in Pr 3+ - and Eu 3+ -doped silicate glasses
Four-wave mixing techniques are used to produce laser-induced gratings in Pr3+-doped silicate glasses for the first time to our knowledge. The characteristics of the laser-induced grating are… Expand
Photoinduced absorption in thulium-doped ZBLAN fibers.
TLDR
The photoinduced absorption in four different thulium-doped ZBLAN fibers exposed to 1.12-μm light is observed mainly in the UV–visible part of the spectrum but extends slightly beyond 1 μm in the near-infrared. Expand
Efficient yellow-light generation by frequency doubling a narrow-linewidth 1150 nm ytterbium fiber oscillator.
A linearly polarized, narrow-linewidth, diode-pumped, Yb-doped silica-fiber oscillator operating at 1150 nm was frequency doubled to produce 40 mW of 575 nm radiation. The oscillator generated 89 mW… Expand
Photodarkening in Tb(3+)-doped phosphosilicate and germanosilicate optical fibers.
TLDR
The presence of Tb(3+) is found to sensitize greatly phosphosilicates and germanosilicate optical fibers to photodarkening when they are exposed to 488-nm light, which raises the possibility of side writing refractive-index gratings into silica-based optical fibers with 488,nm light. Expand
Ytterbium-doped fiber amplifiers
The ytterbium-doped fiber amplifier offers a number of attractive features, including a broad-gain bandwidth and a high efficiency, due in large part to its freedom from various competing processes… Expand
Radiation hardening of pure silica optical fibers by high-pressure hydrogen treatment
It was proved that hydrogen (H/sub 2/) treatment, consisting of loading with H/sub 2/ under high pressure and immediate pre-irradiation up to dose values /spl ges/ 10/sup 4/ Gy considerably increases… Expand
...
1
2
...