Determination of emission and absorption cross sections of in waveguides from transversal fluorescence spectra

Lázaro, José A.; Vallés, Juan A.; Rebolledo, M. Á.

doi:10.1088/0963-9659/7/6/014

Cited by 26 publications

(19 citation statements)

References 10 publications

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“…The data on the column labeled by “This work” originate from our present study on an only Er(1.0 mol%)‐doped Z ‐cut congruent crystal. The data on the last column are taken from Huang and colleagues 6,29–36 . For the only Er‐doping case, our data agree well with the results reported in Huang and colleagues 6,29–36 .…”

Section: Resultssupporting

confidence: 89%

“…The data on the last column are taken from Huang and colleagues 6,29–36 . For the only Er‐doping case, our data agree well with the results reported in Huang and colleagues 6,29–36 . The In 2 O 3 codoping results in considerable changes of the peaking absorption cross section at the 370, 380, 493, 525, 549, and 658 nm bands, while the cross‐section value at the other bands does not change.…”

Section: Resultssupporting

confidence: 88%

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Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Zhang

Hua

et al. 2010

Journal of the American Ceramic Society

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Er:In:LiNbO3 crystals were grown by Czochralski method from congruent melts containing 0.5/0.5, 0.5/1.0, and 0.5/1.5 mol%/mol% Er2O3/In2O3. The Er and In concentrations in the crystals were determined by neutron activation analysis. The refractive indices at the 473, 633, and 1536 nm wavelengths were measured by prism coupling technique. The unpolarized Er3+ and OH− absorption spectra of the crystals were measured at room temperature. The Er3+ absorption cross‐section spectra were determined, and the Er3+ spectroscopic properties were analyzed by Judd–Ofelt (J–O) theory. The In segregation coefficient is 1.20 ± 0.06, 0.95 ± 0.05, and 0.89 ± 0.05, respectively, and the Er concentrations in all of the three crystals studied have a nearly same value of 1 mol%. The ordinary index decreases while the extraordinary index increases with the increased In doping level. The 0.5 and 1.0 mol% In2O3‐doped two crystals are below while the 1.5 mol% In2O3‐doped crystal is above the photorefractive threshold concentration. The Er3+ absorption cross sections of some transitions change definitely due to In codoping, but reveal a weak dependence on the In2O3 doping level. The J–O‐predicted spectroscopic parameters show similar In codoping effects. The In codoping hardly affects the Er3+ 1.5 μm radiative lifetime.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 88%

Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Zhang

Hua

et al. 2010

Journal of the American Ceramic Society

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“…8 In contrast, the only requirement for the theory of McCumber is that the time necessary to establish a thermal distribution with each manifold should be short compared with the lifetime of that manifold. 8,9 According to McCumber's theory, the absorption and emission cross sections can be related by r e ðvÞ ¼ r a ðvÞexp ½ðhv À eÞ=kT…”

mentioning

confidence: 99%

Emission and absorption cross-sections of an Er:GaN waveguide prepared with metal organic chemical vapor deposition

Wang

Dahal

Feng

et al. 2011

Applied Physics Letters

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We repost the characterization of emission and absorption cross-sections in an erbium-doped GaN waveguide prepared by metal organic chemical vapor deposition. The emission cross-section was obtained with the Füchtbauer–Ladenburg equation based on the measured spontaneous emission and the radiative carrier lifetime. The absorption cross-section was derived from the emission cross-section through their relation provided from the McCumber’s theory. The conversion efficiency from a 1480 nm pump to 1537 nm emission was measured, which reasonably agreed with the calculation based on the emission and absorption cross-sections.

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“…For the two transitions 2 H 11/2 ↔ 4 I 15/2 and 4 S 3/2 ↔ 4 I 15/2 , five electronic energy parameters are required to be determined. [19][20][21] We thus determine ΔE ul = 6518.9 ± 2.1 cm −1 . For the other transitions, only three parameters need to be determined, that is, the Stark splittings ΔE l and ΔE u , and the energy gap between two levels related, named ΔE ul .…”

Section: Emission and Absorption Crosssection Spectramentioning

confidence: 94%

“…These include the Stark splittings ΔE i (i = u, l and g)] of upper (u), lower (l), and the ground (g) manifold, and the electronic energy gap between the upper (lower) state of the two thermalized states and the ground manifold, named ΔE ug (ΔE lg ). 13,[19][20][21] The condition is fulfilled at higher energy side λ H = 1457 nm and lower energy side λ L = 1656 nm (the λ C , λ H , and λ L are indicated by the three magenta arrows in the left part of Figure 1). Here, we adopted a method of identification of peak with regard to the transition between the lowest component of each manifold in combination with 5% criterion for the extreme transitions of the emission band.…”

Section: Emission and Absorption Crosssection Spectramentioning

confidence: 99%

Er³⁺ cross‐section spectra of Er³⁺/Pr³⁺:Gd₃Ga₅O₁₂ single‐crystal: Pr³⁺‐codoping effect

Wang

Chen

et al. 2019

J Am Ceram Soc

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Fluorescence and absorption spectra at 530 nm (2H11/2→4I15/2), 560 nm (4S3/2→4I15/2), 660 nm (4F9/2→4I15/2), 980 nm (4I11/2→4I15/2), 1530 nm (4I13/2→4I15/2), and 2710 nm (4I11/2→4I13/2) of Er3+ in Gd3Ga5O12 single‐crystal codoped with Pr3+ have been measured. Judd‐Ofelt analysis yields the intensity parameters Ω2 = (0.68 ± 0.03) × 10−20 cm2, Ω4 = (0.60 ± 0.07) × 10−20 cm2, and Ω6 = (0.90 ± 0.17) × 10−20 cm2. A comparison with previously reported values of Er3+‐only doping case shows that Pr3+‐codoping causes slight change of both Ω2 and Ω4, while onefold increase of Ω6. From calculated radiative rates and measured fluorescence spectra, Er3+ emission cross‐section spectra were calibrated at first. Then, the absorption cross‐section spectra were calculated using McCumber relation. In parallel, the absorption cross‐section spectra were also obtained from the measured absorption spectrum, and compared with those obtained from the McCumber relation. The comparison shows that both methods give consistent result of absorption cross‐section spectrum. Further comparison with Er3+‐only doping case shows that Pr3+‐codoping causes considerable change of Er3+ cross‐section value. In spectrally mixing regions of Er3+ and Pr3+, Pr3+ emission affects little the determination of Er3+ emission cross‐section as Pr3+ fluorescence is much weaker than Er3+ fluorescence due to low Pr3+ concentration.

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Determination of emission and absorption cross sections of in waveguides from transversal fluorescence spectra

Cited by 26 publications

References 10 publications

Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Emission and absorption cross-sections of an Er:GaN waveguide prepared with metal organic chemical vapor deposition

Er³⁺ cross‐section spectra of Er³⁺/Pr³⁺:Gd₃Ga₅O₁₂ single‐crystal: Pr³⁺‐codoping effect

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Determination of emission and absorption cross sections of in waveguides from transversal fluorescence spectra

Cited by 26 publications

References 10 publications

Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Judd-Ofelt Spectroscopic Study of Er:In:LiNbO3 Crystals For Integrated Optics

Emission and absorption cross-sections of an Er:GaN waveguide prepared with metal organic chemical vapor deposition

Er3+ cross‐section spectra of Er3+/Pr3+:Gd3Ga5O12 single‐crystal: Pr3+‐codoping effect

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Er³⁺ cross‐section spectra of Er³⁺/Pr³⁺:Gd₃Ga₅O₁₂ single‐crystal: Pr³⁺‐codoping effect