Photobleaching of thulium-doped ZBLAN fibers with visible light

Laperle, Pierre; Chandonnet, Alain; Vallée, Réal

doi:10.1364/ol.22.000178

Cited by 29 publications

(12 citation statements)

References 15 publications

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“…6 for the stretched exponential fits are consistent with observations by several groups who have studied photobleaching and thermal annealing of color center defects in glasses. Laperle et al 21 observed that an absorption change in a thulium-doped ZBLAN glass fiber induced by infrared laser light was associated with color center formation. Prolonged exposure of the fiber to a visible laser light source resulted in photobleaching of the color centers and an associated decay in the absorption increase.…”

Section: Resultsmentioning

confidence: 99%

Fluorescence Spectroscopy of Color Centers Generated in Phosphate Glasses after Exposure to Femtosecond Laser Pulses

Chan

Huser

Hayden³

et al. 2002

Journal of the American Ceramic Society

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A confocal fluorescence microscopy setup was used to observe, in situ, spectral changes in phosphate glasses which were modified using 0.3 J of tightly focused 800 nm, 130 fs laser pulses. On 488 nm excitation, the modified glass shows a broad fluorescence centered at roughly 600 nm, which decays with prolonged exposure to the 488 nm light. The decay behavior is dependent on the 488 nm power, with a faster decay rate for higher powers. A mechanism whereby color centers, formed by the femtosecond pulses, fluoresce when excited by the 488 nm light and are simultaneously photobleached is proposed to explain the observed behavior.

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Section: Resultsmentioning

confidence: 99%

Fluorescence Spectroscopy of Color Centers Generated in Phosphate Glasses after Exposure to Femtosecond Laser Pulses

Chan

Huser

Hayden³

et al. 2002

Journal of the American Ceramic Society

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“…It is believed that the excitation of higher levels of Tm 3+ ions via energy transfer processes leads to the creation of color centers that significantly increase the absorption in visible band. Although a few investigations of photodegradation and photobleaching have been conducted [149][150][151][152], so far there still has no effective method to prevent photodegradation occurring in high-power operation of Tm 3+ -doped ZBLAN fiber lasers. Nevertheless, using new pumping schemes [153][154][155][156] can improve the CW performance of Tm 3+ -doped ZBLAN fiber lasers by reducing the pump threshold and increasing the conversion efficiency.…”

Section: Upconversion Er 3+ -Doped Zblan Fiber Lasers the Partial Enmentioning

confidence: 99%

High-Power ZBLAN Glass Fiber Lasers: Review and Prospect

Zhu

Peyghambarian

2010

Advances in OptoElectronics

275

110

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-NaF), considered as the most stable heavy metal fluoride glass and the excellent host for rare-earth ions, has been extensively used for efficient and compact ultraviolet, visible, and infrared fiber lasers due to its low intrinsic loss, wide transparency window, and small phonon energy. In this paper, the historical progress and the properties of fluoride glasses and the fabrication of ZBLAN fibers are briefly described. Advances of infrared, upconversion, and supercontinuum ZBLAN fiber lasers are addressed in detail. Finally, constraints on the power scaling of ZBLAN fiber lasers are analyzed and discussed. ZBLAN fiber lasers are showing promise of generating high-power emissions covering from ultraviolet to mid-infrared considering the recent advances in newly designed optical fibers, beam-shaped high-power pump diodes, beam combining techniques, and heatdissipating technology.

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“…However, the rehabilitating rate is limited; what's more, the process usually takes very long time. In order to improve optical transparency and reduce radiation-induced loss in irradiated fiber more efficiently, Thermal-Bleaching method [9][10] and photo-bleaching method [11][12][13][14] are both introduced. Although the thermal-bleaching technique is widely used in glass and photo-bleaching technique is reported in many papers, photo-bleaching technique applied in SMF has not been lucubrated.…”

Section: Introductionmentioning

confidence: 99%

Influence of photo- and thermal bleaching on pre-irradiation low water peak single mode fibers

et al. 2011

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Reducing the radiation-induced transmission loss in low water peak single mode fiber (LWP SMF) has been investigated by using photo-bleaching method with 980nm pump light source and using thermal-bleaching method with temperature control system. The results show that the radiation-induced loss of pre-irradiation optical fiber can be reduced effectively with the help of photo-bleaching or thermal-bleaching. Although the effort of photo-bleaching is not as significant as thermal-bleaching, by using photo-bleaching method, the loss of fiber caused by radiation-induced defects can be reduced best up to 49% at 1310nm and 28% at 1550nm in low pre-irradiation condition, the coating of the fiber are not destroyed, and the rehabilitating time is just several hours, while self-annealing usually costs months' time. What's more, the typical high power LASER for photo-bleaching can be 980nm pump Laser Diode, which is very accessible.

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Photobleaching of thulium-doped ZBLAN fibers with visible light

Cited by 29 publications

References 15 publications

Fluorescence Spectroscopy of Color Centers Generated in Phosphate Glasses after Exposure to Femtosecond Laser Pulses

Fluorescence Spectroscopy of Color Centers Generated in Phosphate Glasses after Exposure to Femtosecond Laser Pulses

High-Power ZBLAN Glass Fiber Lasers: Review and Prospect

Influence of photo- and thermal bleaching on pre-irradiation low water peak single mode fibers

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