Nd3+:Y2O3 Ceramic Laser

Lu, Jianren; Lu, Junhua; Murai, T.; Takaichi, K.; Uematsu, T.; Ueda, Ken–ichi; Yagi, Hideki; Yanagitani, Takahiko; Kaminskii, Alexander A.

doi:10.1143/jjap.40.l1277

Cited by 189 publications

(102 citation statements)

References 8 publications

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“…There are good reasons to believe that progress in the basic research and developments considered and briefly mentioned above will lead not only to improvements in the understanding of crystalline lasers but will also stimulate research into novel laser technologies. CaWO4 300 ∼ 0.81 [477] SrAl11O19:MgO 300 ∼ 0.81 [478] Y2O3 (ceramic) 300 ∼ 0.807 [290] β-YAl3(BO3)4 300 ∼ 0.808 [421,479,480] www.lpr-journal.org h) The composition of crystal was Cd0.55Mn0.45Te [603]. i) "Fibre"-like laser as well [614].…”

Section: Discussionmentioning

confidence: 98%

“…These dependences are universal in character and, in particular, they can be used for the analysis of Nd 3+ -doped nanocrystalline ceramics. Based on these fundamental properties of the β JJ (X Nd ) dependences and by using the fitting with measured β JJ values in [290], the spectroscopic quality parameters for the first neodymium laser ceramics fabricated by VSN method [10] …”

Section: Laser Potential Of Oxide Crystalline Ceramicsmentioning

confidence: 99%

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Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

364

236

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After a brief examination of known insulating laser crystals and the stimulated emission channels of their generating activator ions, this article reviews recent advances in the development of novel lasing crystals and ceramics, as well as inorganic and organic nonlinear-laser crystals for χ (3) and cascaded χ (3) ↔ χ (2) frequency converters. Several new modern attractive technologies in the physics and techniques of crystalline lasers are also discussed.Section of the crystal structure of Na3Li (SeO4)

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Section: Discussionmentioning

confidence: 98%

Section: Laser Potential Of Oxide Crystalline Ceramicsmentioning

confidence: 99%

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

364

236

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“…1) [4,5]. The cubic crystal symmetries (absence of the birefringence which causes extremely high scattering losses) are generally required for the crystallites of optical ceramics, meaning that only a few inorganic materials can be used.…”

mentioning

confidence: 99%

Room-temperature sintered metal-organic framework nanocrystals: A new type of optical ceramics

Zhou

Wang

et al. 2018

Sci. China Mater.

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Ceramic is a rigid material consisting of an infinite threedimensional network of sintered non-oriented inorganic, non-metallic crystalline grains, which are generally nontransparent. If the inner light scatter is eliminated, ceramics can become transparent or optical ceramics [1,2]. With great potentials in optical windows, sensors and lasers, optical ceramics have received great attentions since 1950s [1]. As the gain medium of solid-state lasers, optical ceramics can combine the advantages of large size, high transparency, high mechanical and thermal stabilities, and ease for dispersing the luminous atoms and groups [3]. For comparison, single-crystal gain mediums can suffer high power density but are difficult to grow into large size, while glasses and polymers have reversed characteristics.To make ceramics transparent, the inner pore and impurity should be minimized to zero, which requires highly pure, nanosized, and very uniform crystallite precursors as well as complicated fusing technology ( Fig. 1) [4,5]. The cubic crystal symmetries (absence of the birefringence which causes extremely high scattering losses) are generally required for the crystallites of optical ceramics, meaning that only a few inorganic materials can be used. Besides, ceramics sintering usually operates above 1000 o C, which excludes organic and organic-inorganic hybrid materials [1].Porous coordination polymers (PCPs) or metal-organic frameworks (MOFs) are crystalline materials consisting of metal ions and organic ligands, which have captured widespread attentions for adsorption, catalysis, sensing, optics [6] and also laser gain mediums [7][8][9][10][11]. As can be seen in membranes and photonic crystals [12,13], MOF nanocrystals may merge to form seamless microscopic blocks under mild conditions [14][15][16]. Nevertheless, macroscopic and optical transparent blocks of MOF nanocrystals/microcrystals are still unknown so far. Just like single crystals and optical ceramics, increasing the block size with high optical quality is always a great challenge for many materials. Here, we show that by simply slowing down the solvent evaporation rate, nanocrystals of the prototypical MOF SOD-[Zn(mim) 2 ] (MAF-4/ZIF-8 [17,18], Hmim = 2-methylimidazole, Fig. 2) with the cubic crystal symmetry can fuse at room temperature to form large transparent blocks. After doping laser dye, this metal-organic optical ceramic (MOOC) can show the amplified spontaneous emission (ASE) with a very low energy-density threshold.MAF-4 nanocrystals with uniform size (ca. 20 nm) can be easily synthesized by reaction of Zn(NO 3 ) 2 and Hmim in methanol or ethanol at room temperature (Fig. S1). Compared with the commonly used solvent methanol [19], ethanol is nontoxic and more environment-friendly. After centrifugation and washed, the residual nanocrystals and solvent form a white gel-like (semi-fluidic) block.

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“…Nanotechnology and sintering techniques can be utilized in combination for the fabrication of rare earth-doped yttria transparent ceramics because the high surface area of the nanoparticles facilitates sintering, permitting one to reach full density more rapidly at temperatures far below the melting point of the material [1,2]. The fabrication of Yb doped Y 2 O 3 transparent ceramic involves the synthesis of non-agglomerated nanoparticles of Yb doped Y 2 O 3 and sintering of pressed pellets (prepared using a nanopowder) at high temperatures under low pressure [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of surfactant concentration and solvent used for washing in the preparation of Yb:Y2O3 transparent ceramics

Pratik¹,

Satapathy²,

Singh³

et al. 2016

Nanosystems: Phys. Chem. Math.

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Nanoparticles of Yb:Y 2 O 3 have been synthesized by co-precipitation synthesis routes. The (NH 4 ) 2 SO 4 surfactant was added to Y(OH) 3 precipitate during synthesis to control the size, morphology, agglomeration and phase of nanoparticles. The dried precipitates were calcined at 900 • C to obtain the desired cubic phase Yb:Y 2 O 3 nano particles. In the present study we reported the effects of surfactant concentration on size, morphology, agglomeration and phase of Yb:Y 2 O 3 nanoparticles. However the addition of surfactant is not enough to get nonagglomerated nanoparticles. The extracted precipitate should be washed in proper solvent to avoid formation of hard agglomerate during drying. Hence the effects of washing solvent (i.e. water and methanol) on agglomeration and transparency were also reported. The transparency of the sintered pellets, prepared by varying the surfactant concentration and washing solvent, was evaluated. A transparency of ∼ 80 % at 1500 nm was achieved in 1 mm thick Yb:Y 2 O 3 ceramic pellet by optimization of the surfactant and washing solvent.

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Nd³⁺:Y₂O₃ Ceramic Laser

Abstract: We have demonstrated CW one-micron laser oscillation in new ceramic laser material on the base of cubic Nd3+:Y2O3. Slope efficiency of 32% was achieved on an uncoated 1.5 at.% Nd3+:Y2O3 ceramic plate with size of φ14 ×2.7 mm under laser diode end-pumping.

Cited by 189 publications

References 8 publications

Laser crystals and ceramics: recent advances

Laser crystals and ceramics: recent advances

Room-temperature sintered metal-organic framework nanocrystals: A new type of optical ceramics

Effect of surfactant concentration and solvent used for washing in the preparation of Yb:Y2O3 transparent ceramics

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