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

2016 ◽  
Vol 675-676 ◽  
pp. 389-392 ◽  
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.

Optical, Luminescence and Judd-Oflet Study of Eu3+ Doped Lithium Yttrium Borate Glasses for Using as Laser Gain Medium

2016 ◽  
Vol 675-676 ◽  
pp. 364-367 ◽  
Author(s):  
Eakgapon Kaewnuam ◽  
Natthakridta Chanthima ◽  
C.K. Jayasankar ◽  
Hong Joo Kim ◽  
Jakrapong Kaewkhao
Keyword(s):  
Near Infrared ◽  
Gain Medium ◽  
Optimum Concentration ◽  
Photon Absorption ◽  
Borate Glasses ◽  
Photoluminescence Properties ◽  
Melt Quenching ◽  
Laser Gain ◽  
Optical Luminescence ◽  
Doped Glass

The photoluminescence properties of lithium yttrium borate glasses doped with Eu3+ (LiYB:Eu3+) were studied in this work. Glass samples were prepared by melt-quenching technique with variation of Eu2O3 doped concentration between 0.00 – 6.00 mol%. The absorption spectra show that LiYB:Eu3+ glasses absorbed photon in visible light (VIS) and near-infrared (NIR) region. Photon absorption at 394 nm can excite glass to emit the number of photons in VIS region such as 591, 613, 653 and 701 nm. The strongest emission belong to the light with 613 nm wavelength. The optimum concentration of Eu2O3 for LiYB glass is 4.00 mol%. Judd-Oflet (J-O) analysis was used to study on 4.00 mol% doped glass, which shows the interesting potential for using this glass as gain medium in 701 nm emitting laser.

scholarly journals Temperature-Dependent Stimulated Emission Cross-Section in Nd3+:YLF Crystal

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 431
Author(s):  
Giorgio Turri ◽  
Scott Webster ◽  
Michael Bass ◽  
Alessandra Toncelli
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Room Temperature ◽  
Radiative Decay ◽  
Emission Cross Section ◽  
Spectroscopic Properties ◽  
Stimulated Emission ◽  
Different Temperatures ◽  
Stimulated Emission Cross Section ◽  
Semi Empirical

Spectroscopic properties of neodymium-doped yttrium lithium fluoride were measured at different temperatures from 35 K to 350 K in specimens with 1 at% Nd3+ concentration. The absorption spectrum was measured at room temperature from 400 to 900 nm. The decay dynamics of the 4F3/2 multiplet was investigated by measuring the fluorescence lifetime as a function of the sample temperature, and the radiative decay time was derived by extrapolation to 0 K. The stimulated-emission cross-sections of the transitions from the 4F3/2 to the 4I9/2, 4I11/2, and 4I13/2 levels were obtained from the fluorescence spectrum measured at different temperatures, using the Aull–Jenssen technique. The results show consistency with most results previously published at room temperature, extending them over a broader range of temperatures. A semi-empirical formula for the magnitude of the stimulated-emission cross-section as a function of temperature in the 250 K to 350 K temperature range, is presented for the most intense transitions to the 4I11/2 and 4I13/2 levels.

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

2011 ◽  
Vol 299-300 ◽  
pp. 641-644 ◽  
Author(s):  
Dong Dong Huang ◽  
Qiu Hong Yang ◽  
Yong Gang Wang ◽  
Hao Jia Zhang
Keyword(s):  
Grain Size ◽  
Optical Properties ◽  
Spectroscopic Properties ◽  
Gain Medium ◽  
Emission Peak ◽  
Transparent Ceramics ◽  
Laser Gain

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.

PHYSICAL, ABSORPTION AND FLUORESCENCE SPECTRAL STUDIES OF Pr3+ IONS DOPED LITHIUM BISMUTH BORATE GLASSES

2013 ◽  
Vol 22 ◽  
pp. 298-304
Author(s):  
BEENA BHATIA ◽  
VISHAL PARIHAR
Keyword(s):  
Transition Probability ◽  
Emission Cross Section ◽  
Radiative Lifetime ◽  
Branching Ratio ◽  
Emission Spectra ◽  
Radiative Transition ◽  
Stimulated Emission ◽  
Radiative Properties ◽  
Spectral Studies ◽  
Intensity Parameters

Glasses of the system: xB2O3-10Bi2O3-30Li2O-xPr6O11 where x =1, 1.5 and 2 were prepared by melt quenching technique. Optical absorption and emission spectra have been recorded. The intensities of f-f transition are calculated in term of Judd-Ofelt (JO) intensity parameters Ωλ (λ = 2, 4 and 6). Using the fluorescence data and these Ωλ parameters, various radiative properties like transition probability (Arad), branching ratio (βR), radiative lifetime (τR), and stimulated emission cross section (σp), of various emission lines have been evaluated. The branching ratio for 3P0→3H4 transition is 56% and the predicted spontaneous radiative transition probability rates are fairly high 16411 s−1. This is beneficial for lasing emission.

Optical and Luminescence Properties of Trivalent Rare Earth Ion (Sm3+, Dy3+, and Eu3+) doped Glass for Laser Gain Medium Development : A Review

2020 ◽  
Vol 1 (2) ◽  
pp. 1-4
Author(s):  
Lia Yuliantini ◽  
Mitra Djamal ◽  
Rahmat Hidayat ◽  
Jakrapong Kaewkhao
Keyword(s):  
Rare Earth ◽  
Raw Materials ◽  
Optical Gain ◽  
Gain Medium ◽  
Rare Earth Ions ◽  
Luminescence Properties ◽  
Rare Earth Ion ◽  
Laser Gain ◽  
Trivalent Rare Earth ◽  
Doped Glass

Abstract –Recently, development of laser gain medium has been more attractive to be investigated due to the laser application in human daily life. For example, laser is used for medical treatment, surgery, security system, cutting, spectroscopy characterization and sensor. Laser is produced by the system including pump source, resonator, and an optical gain medium. This paper will be focused in a gain medium based on trivalent rare earth ions (Ln3+) such as Dy3+, Sm3+, and Eu3+ doped glass. The gain medium is developed by melt and quenching technique. The raw materials are a powder that is melted at the glass transition temperature. Afterwards, the glass liquid is poured at stainless steel at room temperature and annealed for several hours. After the annealing process, the bulk glass is cut and polished for characterization. Physical, optical, and luminescence properties of the gain medium are analyzed and discussed in this paper. The CIE 1931 chromaticity diagram coordinate is calculated to define the proper coordinate of glass sample emission light. The previous research shows that Dy3+, Sm3+ and Eu3+ in glass system can emit white, orange, and reddish-orange excited by 388 nm, 403 nm and 393 nm, respectively. From the results, trivalent rare earth ion doped glass possesses high potential to be developed for laser gain medium material. Keywords: glass, laser, luminescence, optic, Ln3+

Spectroscopic properties of Er/Yb co-doped glass ceramics containing nanocrystalline Bi2ZnB2O7 for broadband near-infrared emission

2019 ◽  
Vol 45 (15) ◽  
pp. 18831-18837 ◽  
Author(s):  
Mingming Li ◽  
Jiapan Luan ◽  
Yin Zhang ◽  
Feng Jiang ◽  
Xiang Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Glass Ceramics ◽  
Spectroscopic Properties ◽  
Infrared Emission ◽  
Doped Glass ◽  
Near Infrared Emission ◽  
Co Doped

Difference of Properties between Yb3+-Doped Silicate and Phosphate Laser Glasses

2006 ◽  
Vol 11-12 ◽  
pp. 213-216
Author(s):  
An Xian Lu ◽  
S.J. Liu ◽  
X.D. Tang ◽  
S.B. He
Keyword(s):  
Phosphate Glass ◽  
Emission Cross Section ◽  
Nonlinear Refraction ◽  
Refraction Index ◽  
Phosphate Glasses ◽  
Stimulated Emission ◽  
Laser Medium ◽  
Mechanical And Thermal Properties ◽  
Melt Quenching ◽  
Better Than

The Yb3+-doped silicate and phosphate laser glasses were prepared by using of traditional melt quenching technology, and the physical and spectral properties were investigated. The results show that the stimulated emission cross section and the fluorescence lifetime are 0.67×10-20cm2 and 1200μs for the silicate glass, and 0.75×10-20cm2 and 1000μs for the phosphate glass respectively. And silicate glass’s mechanical and thermal properties were better than that of phosphate glass. But Yb3+-doped phosphate glass has lower nonlinear refraction index n2. Both Yb3+-doped silicate and phosphate glasses are possible to be used as laser medium.

Sign in / Sign up

Export Citation Format

Share Document