Optical spectroscopy of Yb3+ centers in BaMgF4 ferroelectric crystal

García-Santizo, J.V.; Rosal, Blanca del; Ramı́rez, M. O.; Bausá, L. E.; Vı́llora, Encarnación G.; Molina, P.; Vasyliev, V.; Shimamura, Kiyoshi

doi:10.1063/1.3638040

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…These materials are considered as key components in the development of future technologies, for example, in memories and read-write electronic devices. 14 To date, BMF phases have been synthesized as bulk single crystals by the Bridgman method, 15 using Czochralski-basedgrowth 6,[16][17][18] and hydrothermal synthesis, 12,13,[19][20][21] or as nanocrystalline material. 22 Sol-gel techniques to synthesize polycrystalline BMF have also been reported, but in these reports BaF 2 and/or MgF 2 impurities were found.…”

Section: Introductionmentioning

confidence: 99%

The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

et al. 2016

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Conventional and Pulsed Liquid Injection MOCVD processes (C-MOCVD and PLI-MOCVD) have been explored as synthetic routes for the growth of BaMgF on Si (100) and single crystalline SrTiO (100) substrates. For the two applied approaches, the volatile, thermally stable β-diketonate complexes Ba(hfa)tetraglyme and Mg(hfa)(diglyme)(HO) have been used as single precursors (C-MOCVD) or as a solution multimetal source (PLI-MOCVD). Structural characterization through X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) analyses confirmed the formation of epitaxial BaMgF films on SrTiO substrates. Energy dispersive X-ray (EDX) analyses have been used to confirm composition and purity of deposited films. The impact of process parameters on film properties has been addressed, highlighting the strong influence of precursor ratio, deposition temperature and oxygen partial pressure on composition, microstructure and morphology of the films. Both methods appear well suited for the growth of the BaMgF phase, but while PLI-MOCVD yields a more straightforward control of the precursor composition that reflects on film stoichiometry, C-MOCVD provides easier control of the degree of texturing as a function of temperature.

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Section: Introductionmentioning

confidence: 99%

The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

et al. 2016

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“…[19][20][21] In particular, the possibility of incorporating Nd 3+ ions has been recently demonstrated, opening the way to the development of potential self-frequency converted all solid-state lasers operating in the UV and vacuum-UV (VUV) and mid-IR spectral regions. 11 Namely, by means of site selective spectroscopy, it has been recently shown that Nd incorporates into the BMF matrix at two well-differentiated centers referred to as A (dominant) and B (minor) centers.…”

Section: Introductionmentioning

confidence: 99%

Local environment of optically active Nd3+ions in the ultratransparent BaMgF4ferroelectric crystal

et al. 2012

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A comprehensive study of the site location of Nd 3+ ions in the BaMgF 4 ultratransparent ferroelectric crystal is presented. By combining different low-temperature optical spectroscopies and electron paramagnetic resonance, the crystal field energy levels of Nd 3+ ions and the gyromagnetic factors are experimentally determined. These results are employed to perform the crystal field analysis of Nd 3+ ions considering a Cs point symmetry. The crystal field calculation yields a small root-mean-square deviation of 18 cm −1 and reveals a large crystal field strength (621 cm −1 ), verifying the assignment of the Ba 2+ cationic site as the location for Nd 3+ ions in this fluoride host. The results suggest a slight displacement of Nd 3+ from the barium regular site with a rearrangement of the fluorine ions around it. The work gives a deep insight into the properties of the Nd 3+ -doped BaMgF 4 crystal, a ferroelectric widely ultra-transparent material with potential applications as optical device operating in the Vacuum Ultraviolet-Ultraviolet and midinfrared spectral regions.

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BaMgF₄: An Ultra‐Transparent Two‐Dimensional Nonlinear Photonic Crystal with Strong χ⁽³⁾ Response in the UV Spectral Region

Mateos

Ramı́rez

Carrasco

et al. 2013

Adv Funct Materials

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Ferroelectric patterning is often used in advanced photonics and optoelectronic devices to increase their operational bandwidth and functionality, providing novel and unique performances. However, the extension of the ferroelectric structures to two‐dimensional geometries is currently limited to very few oxides and phosphates systems, which constrains its current and future applications. Here, careful processing based on e‐beam lithography and poling is employed to fabricate the first example of a two‐dimensional nonlinear photonic crystal in Barium Magnesium Fluoride, BaMgF4, a ferroelectric fluoride crystal with an extraordinary transparency ranging from the deep ultraviolet (≈126 nm) to the mid infrared (≈13 μm). The optical characterization shows the possibility of obtaining simultaneously up to three different Cerenkov‐type second harmonic generation processes distributed in a conical geometry via χ(2)‐quasi‐phase‐matching technique. Additionally, the remarkably high χ(3) nonlinear response of BaMgF4 crystal in the UV spectral region is exploited to demonstrate what is believed to be the highest direct UV‐third harmonic generation conversion efficiency in a solid state system via pure χ(3) nonlinear process. Together, the results highlight the outstanding opportunities offered by nonlinear photonic structures as innovative avenues to manipulate the light generation and control with reliable multifunctional optical character.

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Optical spectroscopy of Yb3+ centers in BaMgF4 ferroelectric crystal

Cited by 4 publications

References 34 publications

The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

Local environment of optically active Nd3+ions in the ultratransparent BaMgF4ferroelectric crystal

BaMgF₄: An Ultra‐Transparent Two‐Dimensional Nonlinear Photonic Crystal with Strong χ⁽³⁾ Response in the UV Spectral Region

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Optical spectroscopy of Yb3+ centers in BaMgF4 ferroelectric crystal

Cited by 4 publications

References 34 publications

The quest towards epitaxial BaMgF4 thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

The quest towards epitaxial BaMgF4 thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

Local environment of optically active Nd3+ions in the ultratransparent BaMgF4ferroelectric crystal

BaMgF4: An Ultra‐Transparent Two‐Dimensional Nonlinear Photonic Crystal with Strong χ(3) Response in the UV Spectral Region

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The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

The quest towards epitaxial BaMgF₄ thin films: exploring MOCVD as a chemical scalable approach for the deposition of complex metal fluoride films

BaMgF₄: An Ultra‐Transparent Two‐Dimensional Nonlinear Photonic Crystal with Strong χ⁽³⁾ Response in the UV Spectral Region