Resonantly pumped eye-safe Er<sup>3+</sup>:YAG SPS-HIP ceramic laser

Bigotta, S.; Gałecki, Łukasz; Katz, Aurélien; Böhmler, Judith; Lemonnier, Sébastien; Barraud, Elodie; Leriche, Anne; Eichhorn, Marc

doi:10.1364/oe.26.003435

Cited by 22 publications

(4 citation statements)

References 34 publications

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“…Bigotta et al [48] reported laser operation in 0.5 at.% Er 3+ -doped YAG polycrystalline ceramics developed by SPS starting from commercial precursor powder size of 271 nm. After obtaining SPS samples, they were treated with hot isostatic pressing (HIP), which helps in obtaining highly transparent ceramics and removing porosity.…”

Section: Transparent Ceramicsmentioning

confidence: 99%

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

et al. 2020

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This paper presents a review on the preparation of glass-ceramics (GCs) and, in particular, transparent GCs by the advanced processing technique of spark plasma sintering (SPS). SPS is an important approach to obtain from simple to complex nanostructured transparent GCs, full densification in a short time, and highly homogeneous materials for optical applications. The influence of the different processing parameters, such as temperature, pressure, sintering dwell time on the shrinkage rate, and final densification and transparency, are discussed and how this affects the glass material properties. Normally, transparent glass-ceramics are obtained by conventional melt-quenching, followed by thermal treatment. Additionally, the GC scan is produced by sintering and crystallization from glass powders. Hot pressing techniques (HP) in which the source of heating is high-frequency induction can be also applied to enhance this process. In the case of transparent ceramics and glass-ceramics, spark plasma sintering is a promising processing tool. It is possible to enhance the material properties in terms of its compactness, porosities, crystallization, keeping the size of the crystals in the nanometric scale. Moreover, the introduction of a high concentration of active gain media into the host matrix provides functional glass-ceramics systems with enhanced luminescence intensity through reducing non-radiative transitions like multi phonon relaxation (MPR) and cross relaxations (CR), thus providing longer lifetimes. More effort is needed to better understand the sintering mechanisms by SPS in transparent GC systems and optimize their final optical performance.

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Section: Transparent Ceramicsmentioning

confidence: 99%

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

et al. 2020

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“…[3] Spark plasma sintering (SPS), also commonly referred to as field-assisted sintering technology, is a rapid single-step densification technique [21] that keeps growing in popularity while being extended toward more advanced materials. [22] Regarding transparent ceramics, SPS has been successfully used to fabricate various laser ceramics, such as Nd 3þ :Lu 2 O 3 , [23] Yb 3þ :Y 2 O 3 , [24] Er: 3þ YAG, [25] and Nd 3þ :YAG [26] as well as ceramic phosphors such as Ce 3þ YAG, [27] Al 2 O 3 -Ce 3þ ,Gd 3þ :YAG, [28] and Mn 2þ : MgAl 2 O 4 . [29] Herein, we demonstrate a versatile single-step fabrication method of transparent ceramic composites by SPS.…”

Section: Introductionmentioning

confidence: 99%

Simplified Single‐Step Fabrication of Composite Transparent Ceramics

Ratzker,

Mottye,

Kalabukhov

et al. 2024

Adv Eng Mater

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Composite transparent ceramics offer various advantages over monolithic parts in many photonic applications. Typically, the formation of multicomponent composites requires elaborate processes that involve multiple steps of green body preparation and densification. This study presents a straightforward single‐step fabrication method for composite transparent ceramics using spark plasma sintering (SPS). The method utilizes customized compaction tools that enable specific powder arrangements within the graphite die, resulting in a configured green body can be directly densified. The versatile yet simple process was demonstrated for various composite designs, primarily comprising Nd3+:YAG and undoped YAG. The high transparency and precision of these composite ceramics render them suitable for prospective optical components such as high‐power lasers and phosphors. Overall, the proposed method applies to multicomponent functional ceramics and potentially any combination of sinterable materials with similar densification behavior and thermal expansion coefficients.This article is protected by copyright. All rights reserved.

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“…[7][8][9][10] Promising laser performance has been reported in various output wavelength, such as 2.7 μm Q-switch Er: Y 2 O 3 ceramic laser, 1.44 μm picosecond Nd: YAG ceramic laser and resonantly pumped eye-safe Er: YAG laser. [11][12][13] However, fabricating high-quality transparent ceramic for large-scale laser application is still challenging, which is necessary for high-power laser applications. [14] For the application as solid-state laser gain media, transparency is one of the key factors that affects the performance of laser gain media.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Pore Scattering in Transparent Ceramics

Pan

2018

SSP

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Light scattering caused by pores detrimentally affects the optical transparency of transparent ceramics. Herein, Mie theory has been used to calculate the cross-section of pore scattering in transparent ceramics, and the influence of wavelength, pore size distribution and refractive index has been discussed in detail. For wavelength between 200 nm and 2000 nm, the scattering cross-section decreases with increasing wavelength, which means that pore scattering is more detrimental to short-wavelength transparency. With ZOLD function simulating the pore size distribution inside the ceramic, it has been found that the scattering is strongest when the most-probable diameterdmequals the incident light wavelengthλ. And FWHM (full width at half maximum) parameteraalso affects the scattering cross-section.abetween 0.003 and 0.7 is necessary for obtaining high optical transparency in visible wavelength range. The method presented in this work is available for the estimation of scattering effect in different kinds of materials, which may be useful for future design of high-transparency ceramics.

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Resonantly pumped eye-safe Er³⁺:YAG SPS-HIP ceramic laser

Cited by 22 publications

References 34 publications

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

Simplified Single‐Step Fabrication of Composite Transparent Ceramics

Calculation of Pore Scattering in Transparent Ceramics

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Resonantly pumped eye-safe Er3+:YAG SPS-HIP ceramic laser

Cited by 22 publications

References 34 publications

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications

Simplified Single‐Step Fabrication of Composite Transparent Ceramics

Calculation of Pore Scattering in Transparent Ceramics

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Product

Resources

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Resonantly pumped eye-safe Er³⁺:YAG SPS-HIP ceramic laser