Fabrication and Spectroscopic Properties of (Ho0.01La0.10Y0.89)2O3 Transparent Ceramics

Highly transparent (Ho0.01La0.10Y0.89)2O3 transparent ceramics were fabricated by the conventional ceramics processing with nanopowders. The microstructure, the optical properties and the spectroscopic properties of (Ho0.01La0.10Y0.89)2O3 ceramics were investigated. (Ho0.01La0.10Y0.89)2O3 ceramics with the grain size of ~50 μm were obtained by sintering at 1530 °C for 45 h. The highest in-line transmittance reaches 65%. The emission peak located at 2 μm wavelength indicates (Ho0.01La0.10Y0.89)2O3 transparent ceramics is suitable for 2 μm laser gain medium.

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Spectroscopic Properties and Judd-Ofelt Analysis of Dy3+ in Lithium Lanthanum Borate Glass for Laser Medium Application

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.675-676.389 ◽

2016 ◽

Vol 675-676 ◽

pp. 389-392 ◽

Cited By ~ 4

Author(s):

Nuanthip Wantana ◽

Onanong Chamlek ◽

Natthakridta Chanthima ◽

C.K. Jayasankar ◽

Hong Joo Kim ◽

...

Keyword(s):

Near Infrared ◽

Emission Cross Section ◽

Radiative Transition ◽

Spectroscopic Properties ◽

Infrared Region ◽

Gain Medium ◽

Stimulated Emission ◽

Laser Medium ◽

Laser Gain ◽

Doped Glass

Dysprosium doped lithium lanthanum borate glasses (LiLaB:Dy3+) were prepared by the melt quenching technique, varying the Dy2O3 doped concentration from 0.00 to 1.50 mol%. The absorption spectra showed that LiLaB:Dy3+ glass absorbed photon in visible light and near infrared region. From the excitation of 388 nm, this glass emitted the photon with 483, 575, 664 and 753 nm wavelength. The intensity of emission increased with increasing of Dy2O3 concentration until 1.0 mol%, after that it decreased. The Judd-Ofelt (J-O) analysis was applied to 1.0 mol% doped glass to investigate the J-O parameter, radiative transition possibility and stimulated emission cross section. These values were interpreted to the ability of laser gain medium.

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Fabrication and Optical Properties of Cr3+:YSAG Transparent Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.664 ◽

2010 ◽

Vol 434-435 ◽

pp. 664-667 ◽

Cited By ~ 2

Author(s):

Tao Feng ◽

Dan Yu Jiang ◽

Jian Lin Shi

Keyword(s):

Optical Properties ◽

Crystal Field ◽

Powder Compact ◽

Combustion Method ◽

Crystal Field Parameter ◽

Emission Peak ◽

Absorption Peak ◽

Cubic Phase ◽

Transparent Ceramics ◽

Octahedral Crystal Field

Cr-doped Y3ScxAl(5-x)O12(Nd:YSAG) powder have been prepared with a combustion method. The powders are nanosized and a pure cubic phase when calcined at 900°C. Transparent Cr:YSAG ceramics were successfully fabricated by sintering the powder compact at 1800°C under H2 atmosphere. The optical properties were investigated in detail. It was found that after Sc substitute for Al, the The octahedral crystal-field parameter Dq and Dq/B was reduced, and that is why the absorption peak move to the longer wavelength side but the emission peak not moved.

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Influences of Excess PbO on Optical Properties and Microstructures of La Modified 0.75Pb (Mg1/3Nb2/3)O3-0.25PbTiO3 Electro-Optic Transparent Ceramics

Materials Science Forum ◽

10.4028/www.scientific.net/msf.745-746.555 ◽

2013 ◽

Vol 745-746 ◽

pp. 555-559 ◽

Cited By ~ 1

Author(s):

Wen Long Ji ◽

Xi Yun He ◽

Wen Xiu Cheng ◽

Ping Sun Qiu ◽

Xin Sen Zheng

Keyword(s):

Grain Size ◽

Optical Properties ◽

Phase Structure ◽

Perovskite Structure ◽

Second Phase ◽

Transparent Ceramics ◽

Precursor Method ◽

Electro Optic ◽

Average Grain Size ◽

Columbite Precursor

La-modified 0.75Pb (Mg1/3Nb2/3)O3-0.25PbTiO3(PLMNT) electro-optic (EO) transparent ceramics were synthesized through a columbite precursor method. Excess PbO (10, 15 and 20 mol %) was added to study the effect on the transparency, electro-optic effect, and microstructures of PLMNT transparent ceramics. The phase structure of different samples can be identified as single perovskite structure with no second phase detected. The average grain size increased as the concentration of excess PbO increased from 10 mol% to 20 mol%. On the contrary, the transparency decreased with the increase of the concentration of excess PbO. When the concentration of excess PbO was 10 mol%, the transmittance was about 62% at 632.8nm. The EO coefficient was calculated through measuring the birefringence as a function of electric field. The EO coefficient increased with the increase of the concentration of excess PbO and the maximum EO coefficient reached 40.6×10-16(m/V)2 when the excess PbO was 20 mol%.

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Spectroscopic properties of Pr3+:KY(MoO4)2 crystal as a visible laser gain medium

Journal of Physics and Chemistry of Solids ◽

10.1016/j.jpcs.2007.07.085 ◽

2008 ◽

Vol 69 (1) ◽

pp. 8-15 ◽

Cited By ~ 11

Author(s):

Weijie Guo ◽

Yanfu Lin ◽

Xinghong Gong ◽

Yujin Chen ◽

Zundu Luo ◽

...

Keyword(s):

Spectroscopic Properties ◽

Gain Medium ◽

Laser Gain ◽

Visible Laser

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Fabrication and Upconversion Luminescence of Highly Transparent Er:YAG Ceramics

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.185.55 ◽

2012 ◽

Vol 185 ◽

pp. 55-59 ◽

Cited By ~ 3

Author(s):

Xian Peng Qin ◽

Jian Zhang ◽

Hao Yang ◽

De Wei Luo ◽

Jan Ma ◽

...

Keyword(s):

Grain Size ◽

Optical Properties ◽

Solid State ◽

Grain Boundary ◽

Upconversion Luminescence ◽

Secondary Phase ◽

Transparent Ceramics ◽

Vacuum Sintering ◽

Average Grain Size ◽

Sintering Method

Highly transparent Er:YAG ceramics with different Er concentration were fabricated by a solid-state reaction and vacuum sintering method. The optical properties, the microstructure and the upconversion luminescence of the Er:YAG ceramics were investigated. For 3 mm thick samples, the in-line transmittances of the as-fabricated Er:YAG ceramics at the wavelength of 1100 nm and 400 nm were about 84% and 82%, respectively, which was very close to the theoretical transmittance of YAG ceramics. The micrograph of the Er:YAG transparent ceramics exhibited a pore-free structure and the average grain size was about 10 μm. The grain boundary of the ceramics was clean and no secondary phase was detected. When pumped by a 980 nm LD, the strong green and red upconversion luminescences in the Er:YAG ceramics were observed. The different upconversion mechanisms depending on Er concentration in the Er:YAG ceramics were also discussed.

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