Optical and structural studies on BaMgF4:Ce3+ crystals

Kodama, N; Hoshino, Takanobu; Yamaga, M.; Ishizawa, Nobuo; Shimamura, Kiyoshi; Fukuda, Tsuguo

doi:10.1016/s0022-0248(01)01215-5

Cited by 35 publications

(29 citation statements)

References 5 publications

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“…The feature is predominantly formed by a signal detected in the fast TW and is assigned to the transitions from the ground state 4 I 9/2 to the levels belonging to the 4f 2 5d 1 configuration of Nd 3 þ . On the basis of experimentally observed spectral position of the first excitation maximum for Ce 3 þ in BMF when substituting the Ba 2 þ sites ( $260 nm, 38,460 cm À 1 ) [6,22,23], which agrees with the theoretical calculation [24], and the energy difference between the first 4f-5d transition of Nd 3 þ and Ce 3 þ (22,700 cm À 1 [26]), we estimate a first 4f-5d excitation maximum to be at about 164 nm (61,160 cm À 1 ). This is in excellent agreement with our experimental data.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the spectroscopic data documented in Refs. [6,22,23] allow estimating a Stokes shift for Ce 3 þ 5d-4f emission in BMF that is about 4400 cm À 1 . Assuming that the Stokes shift for the rare earth ions having very close ionic radius should be pretty much the same, we can approximately locate the first emission maximum related to the ground 4 I 9/2 (4f 3 ) terminating state as $ 176 nm (56,760 cm À 1 ).…”

Section: Resultsmentioning

confidence: 99%

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VUV–UV 5d–4f interconfigurational transitions of Nd3+ in BaMgF4 ferroelectric crystals

Trevisani

Ivanovskikh

Ramı́rez

et al. 2014

Journal of Luminescence

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a b s t r a c tBaMgF 4 single crystals doped with Nd 3 þ are of great interest as possible active media for VUV-UV and mid-IR all solid-state lasers. The luminescence spectroscopy and the excited state dynamics of these crystals are investigated for the first time upon VUV excitation using synchrotron radiation. The material shows fast Nd 3 þ 5d-4f emission upon direct VUV excitation into Nd 3 þ 5d levels. The decay kinetics of the Nd 3 þ 5d-4f emission in this host lattice upon direct VUV excitation of 5d levels is characterized by a lifetime of about 14 ns with no significant rise after the excitation pulse. No significant temperature dependence of the lifetime is observed within the range 8-300 K.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

VUV–UV 5d–4f interconfigurational transitions of Nd3+ in BaMgF4 ferroelectric crystals

Trevisani

Ivanovskikh

Ramı́rez

et al. 2014

Journal of Luminescence

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“…The origin of the optical losses in the UV/VUV has not been cleared yet, but a correlation with the concentration of scattering centers in the VIS has been observed [7]. BaMgF 4 has been studied as a host crystal doped with transition metal and rare earth for ASSL applications [8,9]. Further, thin lms of BaMgF 4 have been investigated for memory applications, namely metal-ferroelectric-semiconductor eld-eect transistors [10,11].…”

Section: Ferroelectric Uoride Bamgfmentioning

confidence: 99%

Czochralski-Based Growth and Characteristics of Selected Novel Single Crystals for Optical Applications

Shimamura

Vı́llora

2013

Acta Phys. Pol. A

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In the Year of Professor Jan Czochralski, we with pleasure review the representative recent works of our group, Optical Single Crystals Group, NIMS, Japan. Our group has been working on the development of novel single crystals for optical applications based on the Czochralski technique. Here, 4 kinds of topics are reviewed. 1st one is ferroelectric uoride BaMgF4 single crystals for UV nonlinear optical applications including quasi-phase matching device fabrications. 2nd one is transparent conductive β-Ga2O3 single crystals as semiconductor, which has large band-gap, 4.8 eV, for LED applications. 3rd one is F-doped core-free Y3Al5O12 single crystals as a potential new lens material for UV/VUV wavelength region. Last one is superior magneto-optical {Tb3}[Sc2−xLux](Al3)O12 single crystals for near infrared to visible region, and CeF3/PrF3 single crystals for UV region.

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“…According to previous reports, Na þ ions also incorporate into the matrix at the Barium site. 25 As a consequence, not only the charge compensation defects but also the available Ba 2þ sites for Yb 3þ ion can be modified and, therefore, its optical response. The lowest limit of the Na þ content in the codoped crystal has been estimated taking into account the percentage of Yb 3þ centers which are annihilated after Na codoping (42.5%).…”

Section: -4mentioning

confidence: 99%