Ytterbium-doped phosphate laser glasses

Jiang, Shibin; Myers, Michael J.; Rhonehouse, Daniel L.; Hamlin, Scott J.; Myers, John D.; Griebner, Uwe; Koch, R.; Schönnagel, H.

doi:10.1117/12.269990

Cited by 27 publications

(11 citation statements)

References 5 publications

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“…Actually, as the two levels 2 F 5/2 and 2 F 7/2 are split in manifolds by the Stark effect due to the electric crystalline field of the host matrix, the ion environment strongly models the spectrum. In a simple way, the spectral broadening can be directly related to the level of disorder of the matrix [37][38][39][40][41][42][43][44][45][46][47][48]. On the first hand, if the matrix is relatively simple and well-ordered, the spectra would reveal relatively narrow and intense lines (which are a strong disadvantage for short pulse generation).…”

Section: I2 Strategy On the Matrix Hostmentioning

confidence: 99%

On thermal effects in solid-state lasers: The case of ytterbium-doped materials

Chénais

Druon²,

Forget³

et al. 2006

Progress in Quantum Electronics

332

271

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A review of theoretical and experimental studies of thermal effects in solid-state lasers is presented, with a special focus on diode-pumped ytterbium-doped materials. A large part of this review provides however general information applicable to any kind of solid-state laser. Our aim here is not to make a list of the techniques that have been used to minimize thermal effects, but instead to give an overview of the theoretical aspects underneath, and give a state-of-the-art of the tools at the disposal of the laser scientist to measure thermal effects. After a presentation of some general properties of Yb-doped materials, we address the issue of evaluating the temperature map in Yb-doped laser crystals, both theoretically and experimentally. This is the first step before studying the complex problem of thermal lensing (part III). We will focus on some newly discussed aspects, like the definition of the thermo-optic coefficient: we will highlight some misleading interpretations of thermal lensing experiments due to the use of the dn/dT parameter in a context where it is not relevant. Part IV will be devoted to a state-of-the-art of experimental techniques used to measure thermal lensing. Eventually, in part V, we will give some concrete examples in Yb-doped materials, where their peculiarities will be pointed out.

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Section: I2 Strategy On the Matrix Hostmentioning

confidence: 99%

On thermal effects in solid-state lasers: The case of ytterbium-doped materials

Chénais

Druon²,

Forget³

et al. 2006

Progress in Quantum Electronics

332

271

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“…Phosphate glasses are of great interest for the manufacturing of photonic devices because of their good chemical stability, easy processing, high rare-earth solubility and excellent optical characteristics [1,2,3,4,5,6]. Due to these properties, phosphate glasses containing rare-earth (RE) ions are very attractive for optical communications [7], laser sources, as well as optical fiber amplifiers [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses

et al. 2017

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Er-doped phosphate glass ceramics were fabricated by melt-quenching technique followed by a heat treatment. The effect of the crystallization on the structural and luminescence properties of phosphate glasses containing Al2O3, TiO2, and ZnO was investigated. The morphological and structural properties of the glass ceramics were characterized by Field Emission-Scanning Electron Microscopy (FE-SEM), X-ray Diffraction (XRD), and micro-Raman spectroscopy. Additionally, the luminescence spectra and the lifetime values were measured in order to study the influence of the crystallization on the spectroscopic properties of the glasses. The volume ratio between the crystal and the glassy phases increased along with the duration of the heat treatment. The crystallization of the glass ceramics was confirmed by the presence of sharp peaks in the XRD patterns and different crystal phases were identified depending on the glass composition. Sr(PO3)2 crystals were found to precipitate in all the investigated glasses. As evidenced by the spectroscopic properties, the site of the Er3+ ions was not strongly affected by the heat treatment except for the fully crystallized glass ceramic which does not contain Al2O3, TiO2, and ZnO. An increase of the lifetime was also observed after the heat treatment of this glass. Therefore, we suspect that the Er3+ ions are incorporated in the precipitated crystals only in this glass ceramic.

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“…7,10 They exhibit an almost vanishing thermal coefficient of optical path length ͑ds / dT Ϸ 2.1ϫ 10 −6 K −1 as obtained by thermal lens spectroscopy͒, 10 mainly due to its close to zero temperature coefficient of refractive index ͑dn / dT Ϸ −0.2ϫ 10 −6 K −1 ͒ and low thermal expansion coefficient ͑8.3ϫ 10 −6 K −1 ͒. 7 This fact, in addition to the good spectral properties of Yb 3+ ions in QX glass host ͑such as long lifetime, high absorption cross section, and large emission bandwidth͒, 6,7,10 makes ytterbium-doped QX phosphate glasses ͑hereafter QX/Yb͒ a promising candidate for highly efficient laser operation. Continuous-wave laser action from QX/Yb has been already demonstrated under Ti:sapphire and diode pumping.…”

mentioning

confidence: 98%

“…6 In particular, QX laser glasses have demonstrated a significant enhancement in thermal loading capabilities over other conventional phosphate glasses. 7 In fact, multiwatt output powers have been already obtained from Nd 3+ and Er 3+ doped QX glass lasers operating at 1054 and 1540 nm, respectively. 8,9 In addition to its superior thermomechanical properties QX glass materials also show excellent thermo-optical properties.…”

mentioning

confidence: 99%

Continuous-wave diode-pumped Yb:glass laser with near 90% slope efficiency

Jaque

Lagomacini

Jacinto

et al. 2006

Applied Physics Letters

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Room temperature highly efficient laser action from an ytterbium-doped phosphate glass is demonstrated when end pumped by a 975nm fiber-coupled laser diode. Laser slope efficiencies as high as 88% have been obtained, leading to pump-to-laser conversion efficiencies greater than 50%. From the analysis of pumping threshold and laser slope efficiencies the authors have determined both the optical losses and emission cross section at laser wavelength (1028nm).

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Ytterbium-doped phosphate laser glasses

Cited by 27 publications

References 5 publications

On thermal effects in solid-state lasers: The case of ytterbium-doped materials

On thermal effects in solid-state lasers: The case of ytterbium-doped materials

Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses

Continuous-wave diode-pumped Yb:glass laser with near 90% slope efficiency

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