Spectroscopic properties of Er3+ ions in LiNbO3 crystals codoped with HfO2

Li, A.; Sun, L.; Zheng, Zhi-Ying; Lü, Qiang; Wu, Wenzhi; Liu, Wenbo; Yang, Yulin; Lü, Tianquan

doi:10.1007/s00340-007-2818-0

Cited by 13 publications

(6 citation statements)

References 38 publications

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“…The absorption bands centered at 368, 381, 410, 453, 492, 525, 550, 660, 980 and 1540 nm are attributed to the transitions from the ground 4 The J-O intensity parameters of Er:NSLN crystal can be obtained based on the J-O theory, and the corresponding calculated procedures have been reported earlier. [30][31][32] The value of the root mean-square deviation (d rms ) is calculated to be 70 6 10 28 for Er:NSLN crystal, which is similar to that in Er (1 mol%):LiNbO 3 crystal (31 6 10 28 ) reported by J. Amin, 33 indicating that the fitting results here may be credible. The J-O intensity parameters are V 2 = 9.17 6 10 220 cm 2 , V 4 = 2.47 6 10 220 cm 2 and V 6 = 1.00 6 10 220 cm 2 for Er:NSLN crystal.…”

Section: Resultssupporting

confidence: 78%

Upconversion emission in near-stoichiometric LiNbO3:Er3+ crystal

Qian

Wang

et al. 2013

RSC Adv.

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Section: Resultssupporting

confidence: 78%

Upconversion emission in near-stoichiometric LiNbO3:Er3+ crystal

Qian

Wang

et al. 2013

RSC Adv.

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“…5. The details on J-O theory and calculation procedures have been reported in [16]. Consequently, the radiative lifetimes (τ rad ) of 4 …”

mentioning

confidence: 99%

Highly efficient 154 μm emission in Zr/Yb/Er-codoped LiNbO_3 crystal

Qian

Wang

et al. 2012

Opt. Lett.

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Codoping with Zr(4+) ions enhances the 1.54 μm emission in Yb/Er:LiNbO(3) crystal by about three times. Optical damage resistant Zr(4+) ion increases the maximum phonon energy of Er:LiNbO(3) host, which is favorable for the nonradiative relaxation from (4)I(11/2) to (4)I(13/2) state (Er). The time decay spectra show that the incorporation of Zr(4+) ions leads to a shortening lifetime of (4)I(11/2) state (Er), increasing the nonradiative relaxation rate of (4)I(11/2)→(4)I(13/2) (Er) in Yb/Er:LiNbO(3). The 1.54 μm emission enhancement is important to telecommunication application.

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“…A sequential two step upconversion mechanism occurs when the sample is irradiated under 806 nm. 9 The upconversion emissions at 525 and 545 nm obtained for different average laser powers ͑from 334 to 2600 mW͒ are presented in Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Control of the local devitrification on oxyfluoride glass doped with Er3+ ions under diode laser irradiation

González‐Pérez

Martı́n

Jaque

et al. 2010

Journal of Applied Physics

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Local order around rare earth ions during the devitrification of oxyfluoride glasses Temperature control of the devitrification process in an erbium doped oxyfluoride glass under laser irradiation is reported. The green upconversion emissions around 525 and 545 nm originated from the thermalized 2 H 11/2 and 4 S 3/2 levels were studied when the glass structure changes to glass ceramic during irradiation with a laser beam. Power dependence of the fluorescence intensity ratio was used to determine the temperature of the irradiated zone. The transition from glass to glass ceramic takes place under 2300 mW of laser power with an estimated temperature around 783 K. This result agrees with the one obtained in the samples devitrified under conventional furnace treatment. Therefore, the estimation of the temperature of the irradiated zone through the fluorescence intensity ratio method allows a controlled devitrification. Moreover, an irradiated line has been written in the glass showing an important diffusion of the Pb 2+ and F − ions. These results confirm that nanocrystals have been created due to the laser action.

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Spectroscopic properties of Er3+ ions in LiNbO3 crystals codoped with HfO2

Cited by 13 publications

References 38 publications

Upconversion emission in near-stoichiometric LiNbO3:Er3+ crystal

Upconversion emission in near-stoichiometric LiNbO3:Er3+ crystal

Highly efficient 154 μm emission in Zr/Yb/Er-codoped LiNbO_3 crystal

Control of the local devitrification on oxyfluoride glass doped with Er3+ ions under diode laser irradiation

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