Influence of gamma irradiation on photoluminescence and nonlinear optical properties of Eu3+ activated heavy metal borate glasses

Ramesh, P.; Hegde, Vinod; Keshavamurthy, K.; Pramod, A.G.; Jagannath, G.; Aloraini, Dalal Abdullah; Almuqrin, Aljawhara H.; Sayyed, M.I.; Harisha, K. S.; Khan, Sultan; Annapurna, K.; Rao, S. Venugopal; Kokila, M.K.

doi:10.1016/j.optmat.2021.111102

Cited by 21 publications

(6 citation statements)

References 62 publications

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“…The data in Figure 2 depicted the minimum of normalized transmittance at Z = 0 (focal point). This indicates the nonlinearity for ‘reverse saturable absorption’ (RSA) occurred in investigated glasses [ 38 ]. Quantification of the number of photons absorbed for the noticed RSA nonlinear phenomena can be done by fitting the experimental data (symbols in Figure 2 ) with hypothetical mathematical equation [ 39 ]

where, α n is the multi-photon absorption factor (for instance n = 2 when the two-photon absorption process and etc.).…”

Section: Resultsmentioning

confidence: 99%

Nonlinear Optical Limiting and Radiation Shielding Characteristics of Sm2O3 Doped Cadmium Sodium Lithium Borate Glasses

Almuqrin

Jagannath²,

Hivrekar

et al. 2022

Materials

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Strong nonlinear absorption (NLA), reduced optical limiting (OL) thresholds, and high radiation shielding parameters are required for the effective use of glasses in the laser radiation and nuclear radiation protecting materials. In view of this, the efficacy of Sm2O3 on the nonlinear optical (NLO) and OL properties were ascertained (at 532 nm) along with radiation shielding characteristics. The open and closed aperture Z‒scan profiles revealed the presence of positive NLA and nonlinear refraction (NLR) phenomena respectively. OL measurements showed the existence of limiting behavior in the studied glasses. The NLA and NLR coefficients were improved while the OL thresholds were decreased as the doping of Sm2O3 elevated to a higher doping level. These improvements in NLA, NLR coefficients and OL efficiencies were attributed to the non‒bridging oxygens and high polarizable Sm3+ ions. The NLA and OL results clearly suggest the high (5 mol %) Sm2O3 doped glass (Sm5CNLB) glass is beneficial to protect the delicate devices and human eye by suppressing the high energy laser light. The theoretical linear attenuation coefficients (LAC) values of the presented SmxCNLB glasses were obtained with the help of Phy‒X software between 0.284 and 1.333 MeV. At 0.284 MeV, the maximum values occur and take values between 0.302 (for Sm0CNLB) and 0.409 cm‒1 (for Sm5CNLB). We found that the LAC for the presented SmxCNLB glasses is a function of Sm2O3 content, where the LAC tends to increase, corresponding to the high probabilities of interaction, as the content of Sm2O3 changes from 0 to 5 mol%. The effective atomic number (Zeff) for the presented SmxCNLB glasses was examined between 0.284 and 1.333 MeV. As the amount of Sm2O3 is added, the Zeff increases, and this was observed at any energy.

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where, α n is the multi-photon absorption factor (for instance n = 2 when the two-photon absorption process and etc.).…”

Section: Resultsmentioning

confidence: 99%

Nonlinear Optical Limiting and Radiation Shielding Characteristics of Sm2O3 Doped Cadmium Sodium Lithium Borate Glasses

Almuqrin

Jagannath²,

Hivrekar

et al. 2022

Materials

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“…Additionally, gamma irradiation can also lead to the creation of defects in the glass structure, which can also affect the dielectric properties of the glasses. The extent of these changes will depend on the dose of gamma rays and the specific composition of the glasses (24) .…”

Section: Gamma Ray Irradiation Effectsmentioning

confidence: 99%

Effect of Gamma Irradiation on Dielectric and AC Conductivity Studies of Bismuth Borate Glasses Doped with V2O5

Devidas¹,

Dinkar²,

Biradar³

2023

IJST

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Objectives: To study gamma ray irradiation effect on dielectric and AC conductivity of V 2 O 5 doped bismuth borate glasses designed with the compositions 50B 2 O 3 -(50-X)Bi 2 O 3 -XV 2 O 5 where, X = 0, 0.2, 0.4, 0.6, 0.8, 1.0 and establishing the conduction mechanism. Methods: Glasses were synthesized by traditional melt quenching technique at 1323K. The prepared samples were subjected to annealing at 623K, which helps to remove strain in the samples. Absence of crystalline phases in the samples was confirmed by X-ray diffraction studies. An independent measurement of dielectric constant, dielectric loss and AC conductivity was carried out for temperature range from 300Kto 493K by impedance analyzer. Findings: The physical properties of glass were achieved by studying the density and the molar volume. Dielectric constant (ε') and dielectric loss (ε") were measured as a function of temperatures in the range from 300K to 493K, over the frequencies 10 2 Hz -10 6 Hz before and after gamma ray irradiation. AC conductivity (σ AC ) of the glasses was measured as a function of frequency for different temperatures before and after gamma ray irradiation. Novelty: For the first time, it was attempted that the effect of gamma ray irradiation on dielectric and AC conductivity properties of bismuth-borate glasses doped with vanadium oxide has been investigated. Here we have observed the change in the variation of dielectric constant, dielectric loss and AC conductivity with frequency and temperature before and after gamma ray irradiation. The borate network becomes more compact after being exposed to gamma rays, and the energy band gap may even narrow. Furthermore, it has been found that the composition of the glass influences how radiation impacts conductivity.

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“…The scientific community has recently focused on manufacturing and analyzing optical glass systems doped with heavy metal oxide (HMO) and its special applications in optics, photonic devices, and nuclear engineering [1][2][3][4][5]. Synthesis and characterization of new materials are important for several applications [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, trivalent rare-earth (Re 3+ ) ions in glasses contain a substantial percentage of absorption bands in the Vis-NIR areas, making them useful as practical photonic elements for various purposes. Specifically, Er 3+ / Yb +3 ions activated glasses are valuable as the optical gain host, focusing on producing photonic technologies, including solid-state illumination, color displays, and broad bandwidth data storage capacities [1,13,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced linear and nonlinear optical properties of erbium/ytterbium lead phosphate glass by gamma irradiation for optoelectronics applications

et al. 2022

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Herein, this study intends to reveal the impact of gamma irradiation on the structural, linear, and nonlinear optical characteristics of 47P2O5−23Na2O−6Al2O3−22PbO−0.5Er2O3−1.5Yb2O3 glass. The Er/Yb-doped lead phosphate glass samples were produced using the traditional melt quenching procedure and then treated to different doses of gamma irradiation (0, 20, 50, and 100) kGy. The amorphous phase structure of the Er/Yb-doped lead phosphate glass samples was verified through XRD patterns. Also, the shift of the FTIR peaks due to the change in bond angles, and the change in the bond length of the P–O–P bridges means the glass network stability against radiation. With increasing irradiation dosages, the energy gap dropped from 4.11 eV to 3.42 eV and then enhanced to 3.48 at 100 kGy. At the same time, the Urbach energy enhanced from 10.23 eV to 37.03 eV. The oscillator energy Eo was found between 1.55 and 1.62 eV. Also, the dispersion energy Ed varied between 2.11 eV at 100 kGy and 2.71 eV at the dose of 50 kGy. The percentage of free carrier ions to effective mass (N/m*) is in the range (4.82–8.66) × 1047 cm3/g. Besides, the lattice dielectric constant ($${\varepsilon }_{l}$$ ε l ) increased from 5.54 to 6.63 as the gamma dosages increased. Furthermore, increasing gamma doses up to 50 kGy promotes susceptibility, which subsequently declines at 100 kGy, suggesting that increasing gamma doses over 50 kGy weakens polarizability potential. While the increasing gamma doses up to 50 kGy reduces the nonlinear refractive index and then improves at 100 kGy. Overall, the nonlinear and linear research revealed that Er/Yb lead phosphate glass is being used as a promising material for gain media and optical amplifiers.

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Influence of gamma irradiation on photoluminescence and nonlinear optical properties of Eu3+ activated heavy metal borate glasses

Cited by 21 publications

References 62 publications

Nonlinear Optical Limiting and Radiation Shielding Characteristics of Sm2O3 Doped Cadmium Sodium Lithium Borate Glasses

Nonlinear Optical Limiting and Radiation Shielding Characteristics of Sm2O3 Doped Cadmium Sodium Lithium Borate Glasses

Effect of Gamma Irradiation on Dielectric and AC Conductivity Studies of Bismuth Borate Glasses Doped with V2O5

Enhanced linear and nonlinear optical properties of erbium/ytterbium lead phosphate glass by gamma irradiation for optoelectronics applications

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