LaBeB3O7: a new phase-matchable nonlinear optical crystal exclusively containing the tetrahedral XO4 (X = B and Be) anionic groups

Yan, Xue; Luo, Siyang; Lin, Zheshuai; Yue, Yinchao; Wang, Xiaoyang; Liu, Lijuan; Chen, Chuangtian

doi:10.1039/c3tc30294f

Cited by 30 publications

(20 citation statements)

References 52 publications

(53 reference statements)

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“…Other materials belong to classes that are widely investigated: B 3 BeLaO 7 [71] is a non-linear optical crystal, PbZr 0.45 Ti 0.55 0 3 [72] is ferroelectric used in ultrasonic transducers [73] and ceramic capacitors [74], and CdTe is a semiconductor used in solar cells [75]. The Si example is also included as typical failure case for unfamiliar examples.…”

Section: Methodsmentioning

confidence: 99%

Exit Wavefunction Reconstruction from Single Transmission Electron Micrographs with Deep Learning

Ede,

Peters,

Sloan

et al. 2020

Preprint

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Half of wavefunction information is undetected by conventional transmission electron microscopy (CTEM) as only the intensity, and not the phase, of an image is recorded. Following successful applications of deep learning to optical hologram phase recovery, we have developed neural networks to recover phases from CTEM intensities for new datasets containing 98340 exit wavefunctions. Wavefunctions were simulated with clTEM multislice propagation for 12789 materials from the Crystallography Open Database. Our networks can recover 224×224 wavefunctions in ∼25 ms for a large range of physical hyperparameters and materials, and we demonstrate that performance improves as the distribution of wavefunctions is restricted. Phase recovery with deep learning overcomes the limitations of traditional methods: it is live, not susceptible to distortions, does not require microscope modification or multiple images, and can be applied to any imaging regime. This paper introduces multiple approaches to CTEM phase recovery with deep learning, and is intended to establish starting points to be improved upon by future research. Source code and links to our new datasets and pre-trained models are available at https://github.com/Jeffrey-Ede/one-shot.

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Section: Methodsmentioning

confidence: 99%

Exit Wavefunction Reconstruction from Single Transmission Electron Micrographs with Deep Learning

Ede,

Peters,

Sloan

et al. 2020

Preprint

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“…SHG measurements reveal that 8 and 9 are phasematchable with SHG responses similar to KDP. Crystalline LaBeB3O7 (10) (Pna21) was grown from a high-temperature solution by using Li2O-B2O3 as the flux [48]; the structure has some boron sites substituted by beryllium atoms, resulting in corner- Polycrystalline β-Rb2Al2B2O7 (13) was synthesized by a solid-state reaction and a single crystal grown from a high-temperature solution using a H3BO3-RbF-PbO flux. It crystallizes in the trigonal space group P321 [52], the structure consisting of [BO3] groups connected to [AlO4] tetrahedra, and with the charge balance maintained by Rb + cations ( Figure 6).…”

Section: Metal Borates Without Additional Anionsmentioning

confidence: 99%

Recent advances in ultraviolet and deep-ultraviolet second-order nonlinear optical crystals

Yang

Humphrey

et al. 2018

Coordination Chemistry Reviews

189

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Second-order nonlinear optical (NLO) crystals functioning in the ultraviolet (UV) and deep-ultraviolet (deep-UV) regions are critically important as frequency conversion materials for all-solid-state UV laser devices. In this review, we focus on recent studies of inorganic UV and deep-UV NLO crystals with wide UV transparency and SHG efficiency. Following an introduction describing crystal-design strategies for UV and deep-UV NLO materials, the manuscript is organized according to the type of inorganic anions (borates, carbonates, nitrates and phosphates). Special attention is given to the crystal structures, second-order NLO properties, and structure−property correlations. The concluding remarks highlight future prospects in the field, with emphasis on the superiority of the different types of UV and deep-UV NLO crystals and the importance of large-size crystal growth for practical application in electro-optic devices.

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“…[21] Furthermore, alkaline beryllium borates of the type BeB 3 O 6 and Be 2 B 3 O 7 show non-linear optical (NLO) properties in the UV region. [22] Based on these compounds, LaBeB 3 O 7 [23] and CsBe 4 (BO 3 ) 3 were investigated for their applicability as NLO materials. [24] This class of NLO crystals has more recently been extended to the beryllium fluoridoborates Be 2 BO 3 F [25] and LiSr 3 Be 3 B 3 O 9 F 4 , which operate in the deep-ultraviolet region, [26] and the investigation of beryllium borate-based NLO materials is increasingly aided by theoretical methods.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Boronic Acid Anhydride Based Ligand and Its Application in Beryllium Coordination

et al. 2019

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The synthesis of a boronic acid anhydride‐based ligand containing one three‐ and one four‐coordinated boron atom is presented. This ligand was successfully employed as a tridentate κ1N,κ2O‐ligand in the coordination of beryllium chloride and both the ligand and the resulting complex have been structurally characterized. While the boron‐element separations are within the typical range of related homo‐nuclear compounds, the corresponding beryllium‐element distances are rather long, suggesting unexpectedly high electron density at the beryllium center. Incorporation of a beryllium atom in a six‐membered ring causes no more distortion than the corresponding boron atom, suggesting that analogous ligand systems could be used in boron and beryllium coordination chemistry. The generated hetero‐tri‐nuclear complex enables the direct comparison of bond lengths and angles at beryllium and boron atoms in similar coordination environments and can act as a monomolecular model for beryllium borates.

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LaBeB3O7: a new phase-matchable nonlinear optical crystal exclusively containing the tetrahedral XO4 (X = B and Be) anionic groups

Cited by 30 publications

References 52 publications

Exit Wavefunction Reconstruction from Single Transmission Electron Micrographs with Deep Learning

Exit Wavefunction Reconstruction from Single Transmission Electron Micrographs with Deep Learning

Recent advances in ultraviolet and deep-ultraviolet second-order nonlinear optical crystals

Synthesis of a Boronic Acid Anhydride Based Ligand and Its Application in Beryllium Coordination

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