Thermo-optical properties of Nd3+ doped phosphate glass determined by thermal lens and lifetime measurements

Martins, V. M.; Messias, Djalmir N.; Doualan, Jean‐Louis; Braud, Alain; Camy, Patrice; Dantas, Noélio O.; Catunda, T.; Pilla, Viviane; Andrade, Acácio A.; Moncorgé, R.

doi:10.1016/j.jlumin.2015.02.013

Cited by 22 publications

(12 citation statements)

References 27 publications

(34 reference statements)

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“…Based on this result, the optimum concentration of Nd 3+ is 1.5% to give the highest intensity. The unique property of transition f-f has the sensitive oscillator strength against environment to cause the hypersensitive transition in host matrix Nd 3+ doped glass [30,31]. As known that hypersensitive transitions obey the selection rule of ΔS = 0, Δl ≤ 2 and ΔJ ≤ 2 to make ion lanthanide in solid materials have the stronger oscillator strength than in liquid [32][33][34].…”

Section: Absorption Spectramentioning

confidence: 99%

Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application

Rajagukguk

Situmorang

Fitrilawati

et al. 2019

Journal of Luminescence

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Nd 3+ doped fluorophosphate glasses (PANCaFN) with chemical composition of (50-x) P 2 O 5-12Na 2 O-8Al 2 O 3-10CaO-10KF-10CaF 2-xNd 2 O 3 (where x = 0, 0.5, 1.0, 1.5 and 2.0 mol%) have been successfully prepared by melt-quenching method and characterized by several techniques. The optical absorption measurements exhibited signature of Nd 3+ absorption bands in fluorophosphate glasses showed. The spectroscopic analysis have been carried out using Judd-Ofelt parameters and oscillator strength to determine radiative properties such as radiative transition probability (A R), branching ratio (β r), lifetime (τ), emission cross-section (σ e) and quantum efficiency (η). The highest emission intensity was found at 1060 nm for transition 4 F 3/2 → 4 I 13/2 under excitation wavelength of 582 nm for PANCaFN2. The emission cross section, branching ratio and lifetime were evaluated and showed 4.92 × 10 −20 cm 2, 0.7 and 200 μs, respectively. More importantly, the outstanding quantum efficiency of PANCaFN2 could reach to 98.92%. The addition of Nd 3+ ion into fluorophosphate glass could enhance the spectroscopic properties which could play as a potential candidate for solid state applications. Theoretical optical gain evaluation and experimental calculation confirmed that PANCaFN2 had the higher gain than other samples.

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Section: Absorption Spectramentioning

confidence: 99%

Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application

Rajagukguk

Situmorang

Fitrilawati

et al. 2019

Journal of Luminescence

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“…V.M. Martins and group [16] have studied Thermo-optical properties of Nd 3+ doped phosphate glass determined by thermal lens and lifetime measurements and their study they synthesized the thermal and optical properties of a set of Nd 3+ : PAN phosphate glass samples were obtained using the Normalized lifetime thermal lens technique. Kirti Nanda et al [17] have investigated Effect of doping of Nd 3+ ions in BaO-TeO 2 -B 2 O 3 glasses: A vibrational and optical study.…”

Section: Related Workmentioning

confidence: 99%

Spectroscopic properties of NdSUP3+SUP-doped barium phosphate glasses for Laser application

Ravi¹,

Vijaya

Mohan³

2018

IJSRPAS

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Barium phosphate glasses doped with varying Nd 3+ ions concentration were prepared by melt quenching method and characterized through absorption and luminescence measurements. Judd-Ofelt (JO) intensity parameters were derived from the absorption spectrum of 1.0 mol % Nd 2 O 3 -doped glass. Nd 3+ ions exhibit strong near infrared luminescence at 1.06 μm ( 4 F 3/2 → 4 I 11/2 ) has been obtained for all the glasses upon 808 nm diode laser excitation. Obtained JO parameters and refractive index are used to calculate the radiative properties, such as effective bandwidth (λ eff , nm), emission cross-section (σ emi , cm 2 ), radiative transition probabilities (A R , s -1 ) and branching ratio (β R ) for the 4 F 3/2 → 4 I J/2 (where J = 9, 11 and 13) transitions of Nd 3+ ions. Among three transitions 4 F 3/2 → 4 I 11/2 shows higher value of stimulated emission cross-section and branching ratio indicates that the present glasses could be useful for the development of NIR laser at around 1.06 µm.

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“…Assim, vários pesquisadores se empenham em fazer um estudo das propriedades óticas e térmicas de vidros fosfato dopados com o íon Nd , sendo uma das mais importantes a eficiência quântica da luminescência. No entanto, em geral a determinação de n é feita somente a temperatura ambiente [13][14][15][16].…”

Section: Lista De Símbolosunclassified

“…[80]. A absorbância de um material é definida como: utiliza-se a equação (4.1), sabendo que I <xP, e a reescreve como: O procedimento descrito acima, até onde sabemos, é realizado apenas em temperatura ambiente [14,24,64]. Portanto, para uma análise dos parâmetros termo-óticos em função da temperatura é necessário obter os parâmetros 0(Nt) e r(V t) também em função da temperatura.…”

Section: Lista De Símbolosunclassified

“…Tais resultados são indesejáveis quando se estuda materiais com o objetivo de aplicação em laser.Mudanças no valor de n estão relacionadas com alterações no valor do tempo de vida (t) do estado metaestável. Uma diminuição no valor de t com a concentração dos íons TR[15] e com a temperatura[65,66] são indícios de que a eficiência quântica do material esteja também decrescendo[14,15,24,25]. O fato de n decrescer está conectado com o aumento das transições não radiativas no material o que afeta significativamente no processo da emissão laser e consequentemente as propriedades óticas do material[6,13,67].Para determinar n há um número razoável de técnicas experimentais.…”

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Estudo dos parâmetros termo-óticos do vidro fosfato PANK:Nd3+ em função da temperatura

Filho¹,

da²

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This work describes a spectroscopic analysis of phosphate glass called PANK (4 0 P22 0 5 ■ 2 0A120 3 ■ 3 5 N a20 ■ 5 K20 (m o 1 %)) + xNd2O3 with x = 1, 2, 3, 4 e 5 (wt%), as a function of temperature in the range from 80 K to 480 K. Phosphate glasses have received a lot of attention of the researchers by their good thermal-optical properties, as well as, a high quantum efficiency when doped with Nd ion. These properties allow them to be applied as active laser medium, optical fibers and optical amplifiers. In general the studies of properties are performed at room temperature (300 K). However it is necessary execute these studies as a function of temperature, because these properties may be temperature dependent. Applying the thermal lens technique and using the measure of the lifetime of luminescence, was possible to find temperature dependence of quantum efficiency of luminescence. To obtain it was used the normalized lifetime method. As a support to the study were performed measurements of photoluminescence spectra. A discontinuity in thermal diffusivity was observed about 180 K. In the same region an inversion of the thermal lens sign occurred, probably associated in a signal change of the variation of the optical path with the temperature. Both effects were observed for all samples. In this study, it was clear that both the increase of the concentration of Nd ion and increase of the material temperature produced a quenching of luminescence. This effect is noticed in lifetime and quantum efficiency results. Analyzing the result of lifetime in the limit of zero concentration (x ^ 0), it was observed its value has a thermal quenching from 80-200 K and it is related with the thermal excitation of the population in the lower level to the upper Stark level of the metastable level 4F3/2. After 200 K its value keeps constant and it is in good agreement of the radiative lifetime calculated by Judd-Ofelt theory. Based on the behavior of the quantum efficiency in the limit of zero concentration, it is possible to see two regions with thermal quenching. The first one agrees with the same thermal quenching that diminished the value of lifetime while the second one is related to an energy loss by thermal activation of one vibrational mode, confirmed by Raman spectrum. Finally, the results obtained in this work are fundamental to increase the discussion of the temperature dependence of thermal-optical properties, which is important to develop of new solid state laser.

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Thermo-optical properties of Nd3+ doped phosphate glass determined by thermal lens and lifetime measurements

Cited by 22 publications

References 27 publications

Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application

Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application

Spectroscopic properties of NdSUP3+SUP-doped barium phosphate glasses for Laser application

Estudo dos parâmetros termo-óticos do vidro fosfato PANK:Nd3+ em função da temperatura

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