Advantageous growth characteristics and properties of compared with for UV/VUV nonlinear optical applications

This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and education use, including for instruction at the author's institution, sharing with colleagues and providing to institution administration.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. AbstractThe luminescence of Sm 2+ substituting for Sr 2+ or Ba 2+ has been studied in SrFBr, BaFBr, BaFI and SrAlF 5 . The pressure induced shifts of the intra-configurational 5 D 0,1 → 7 F 0,1,2 observed in the MFX crystals are about three times larger than those observed in ruby, confirming thus some potential of these systems as pressure sensors.The comparison of excitation spectra in MFX shows that the position of the lowest 4f 5 5d 1 band shifts strongly to the red passing from SrFBr to BaFI. In BaFI, one observes simultaneously intra-configurational and inter-configurational emission.The non-degenerate 5 D 0 → 7 F 0 emission of Sm 2+ in SrAlF 5 confirms the presence of four crystallographic sites for Sr. Site selective spectra show clear differences for the different sites. Spectra as a function of pressure reveal different pressure shifts for the different sites.

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“…SrAlF 5 is a potential host material for optical applications in the far UV [6] with a complex crystal structure [7]. * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Sm2+ as a probe of crystal field in fluorides and fluorohalides: Effect of pressure and temperature

Penhouet

Hagemann

2008

Journal of Alloys and Compounds

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“…This emission band is dominated by To our data, BMF is lacking a systematic spectroscopic study of the host absorption characteristics. However, some publications report transmission and excitation spectra of undoped BMF which suggest that fundamental absorption edge of the host should start at about 9.5 eV [1,21,22]. As long as BMF represents a BaF 2 -MgF 2 system, it should keep carrying some electronic properties of the binary components (although the crystal structure of BMF is different from BaF 2 and MgF 2 ) including a large band gap which is about 11 eV for BaF 2 [27] and 12.8 eV for MgF 2 [28].…”

Section: Resultsmentioning

confidence: 99%

“…For this research two Nd 3 þ doped BaMgF 4 single crystals were grown using the Czochralski technique under CF 4 atmosphere [1]. One of the samples contained 0.02 mol% of Nd 3 þ ions relative to Ba 2 þ .…”

Section: Experimental and Structural Detailsmentioning

confidence: 99%

“…BaMgF 4 (BMF), one of the few ferroelectric fluorides reported up to now, is a nonlinear crystal which exhibits an extraordinary transparency range extended from the deep UV ( $ 125 nm) to the mid-infrared ( $13 mm) [1]. This constitutes an exceptional window for the observation of optical processes or transitions not possible in other systems, and offers a unique chance to fabricate optical devices operating in the UV and mid-IR, where other nonlinear materials cannot be used.…”

Section: Introductionmentioning

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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“…These crystals, however, cannot be used in the UV/VUV wavelength region, since [5]. Among these, BaMgF 4 is attracting much attention since it is transparent in the UV/VUV [6,7], with a decreasing transparency towards the cuto wavelength at approximately 130 nm. 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].…”

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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Advantageous growth characteristics and properties of compared with for UV/VUV nonlinear optical applications

Cited by 44 publications

References 20 publications

Sm2+ as a probe of crystal field in fluorides and fluorohalides: Effect of pressure and temperature

Sm2+ as a probe of crystal field in fluorides and fluorohalides: Effect of pressure and temperature

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

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

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