Yb-doped Lu3Al5O12 fibers single crystals grown under stationary stable state for laser application

Sangla, Damien; Aubry, Nicolas; Nehari, A.; Brenier, A.; Tillement, Olivier; Lebbou, Kheirréddine; Balembois, François; Georges, Patrick; Perrodin, Didier; Didierjean, Julien; Fourmigué, Jean-Marie

doi:10.1016/j.jcrysgro.2009.09.030

Cited by 22 publications

(12 citation statements)

References 19 publications

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“…The emission at 530 nm due to the 5d 1 -4f radiative transition of Ce 3+ matches well with the spectral sensitivity of photodetectors used in high-energy physics [10]. LuAG was reported as congruent material, so it is possible to grow undoped and RE 3+ -doped LuAG single crystals from the melt using Czochralski (Cz) [11,12], Bridgman (Bd) [13,14] and micro-pulling-down (l-PD) [15,16] techniques. Although the Cz method is the most convenient and well-developed method, it also has some drawbacks such as lower utilization ratio, serious segregation of dopants and high cost.…”

Section: Introductionsupporting

confidence: 61%

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Lebbou

Moretti

et al. 2014

Acta Materialia

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Under a stationary stable regime undoped and Ce-doped LuAG (Lu 3 Al 5 O 12 ) single-crystal fibers were grown by a micro-pullingdown technique. The meniscus length corresponding to the equilibrium state was <200 lm. Fluctuations in the fiber composition and pulling rate were found to have a significant effect on the properties of the fibers grown. A great improvement in the performance was found in samples containing low Ce concentrations (60.1 at.%) and produced using pulling rates <0.5 mm min À1 . Under such conditions a good lateral surface fiber quality was obtained and light propagation was significantly improved. Conversely, a high Ce concentration and a high pulling rate resulted in a strong degradation of the fiber surface quality causing defects to appear and a decrease in light output.

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Section: Introductionsupporting

confidence: 61%

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

Lebbou

Moretti

et al. 2014

Acta Materialia

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“…Another example is LuAG fiber [329]. Undoped and Yb-doped Lu 3 Al 5 O 12 fiber single crystals were grown by using the micro-pulling-down (μ-PD) technique.…”

Section: Fiber Ceramic Lasersmentioning

confidence: 99%

“…High-purity (5 N) Lu 2 O 3 , Al 2 O 3 , and Yb 2 O 3 were used to synthesize Lu 3(1−x) Yb 3x Al 5 O 12 , by using the solidstate reaction method at 1400°C for 30 h in air atmosphere. Figure 9.55 shows the RF μ-PD setup that was used to grow the Yb 3+ -doped LuAG fibers [329]. Induction heating generator, operated at 34 kHz and 25 kW, was used to heat the crucible and the materials.…”

Section: Fiber Ceramic Lasersmentioning

confidence: 99%

“…Figure 9.56 shows photographs of representative samples of both the undoped and Yb-doped LuAG single-crystal fibers, while laser efficiency is shown in Fig. 9.57 [329]. The laser beam could be remained unguided inside the singlecrystal fiber, with an estimated waist size of 120 μm in diameter, which was much The efficiency was limited by the weak overlap between the pumped volume and the laser mode and the limited intrinsic transmission.…”

Section: Fiber Ceramic Lasersmentioning

confidence: 99%

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Transparent Ceramics

Kong

Huang

Que

et al. 2015

Topics in Mining, Metallurgy and Materials Engineering

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“…The NIR luminescent properties of Yb 3 þ have been widely used in Yb-doped laser materials as an excellent dopant [43,44]. The excitation spectrum of YbQ-SiW 12 microtubes is shown in Fig.…”

Section: Nir Photoluminescent Properties Of the Ln-siw 12 And Lnq-siwmentioning

confidence: 99%