Superstructure and stacking faults in hydrothermal-grown KBe2BO3F2 crystals

Yu, Jinqiu; Liu, Lijuan; Jin, Shifeng; Zhou, Haitao; He, Xin; Zhang, Changlong; Zhou, Wenbo; Wang, Xiaoyang; Chen, Xiaolong; Chen, Chuangtian

doi:10.1016/j.jssc.2011.08.025

Cited by 29 publications

(21 citation statements)

References 17 publications

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“…Crystals with high optical quality and thicknesses reaching 3.7 mm can be prepared by the flux method, and these can be used to manufacture the applicable KBBF‐based devices [25] . KBBF crystals with larger size and thicknesses up to 8 mm can be grown by the hydrothermal method, [26] but the conversion efficiency was significantly degraded due to the formation of superstructures and non‐uniformity [27] . Thus, the flux method is still the most suitable approach to grow the large KBBF single crystals with high optical homogeneity, and more attempts are being made.…”

Section: Resultsmentioning

confidence: 99%

Emergent Deep‐Ultraviolet Nonlinear Optical Candidates

2020

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Advances in the generation of coherent lasers at wavelengths below 200 nm as well as the associated equipment and technologies have greatly spurred the development of nonlinear optical (NLO) materials that are capable of phase‐matching in the deep‐ultraviolet (deep‐UV) spectral regions. However, few crystals can meet the technical demands, and studies to date have focused mainly on finding the next competitive candidates. Consequently, several crystals have emerged that hold great potential for the production of deep‐UV harmonic coherent light, which benefit from newly developed systems with novel NLO‐active units and chromophores. This Review provides a comprehensive overview of the developments of emergent candidates in the field of deep‐UV NLO materials, discussing the recent efforts and active advances in the search for superior systems and in understanding their structure–property relationships. The intention is to provide a clear perspective on the current emergent deep‐UV NLO candidates, and to accelerate the discovery of next candidates with high performances to meet the urgent demands.

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Section: Resultsmentioning

confidence: 99%

Emergent Deep‐Ultraviolet Nonlinear Optical Candidates

2020

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“…However, the hydrothermally grown KBBF sample has a much lower conversion efficiency of 0.12% [13]. Initial research reveals that this low efficiency is caused by serious stacking faults along the c-axis that obstruct the nonlinear conversion [14,15]. We therefore infer that the occurrence of stacking faults in hydrothermally grown RBBF is much less compared with that in hydrothermally grown KBBF due to the different growth conditions and different cations.…”

Section: Characteristicsmentioning

confidence: 92%

Hydrothermal growth and optical properties of RbBe2BO3F2 crystals

Liu

Zhou²,

He³

et al. 2012

Journal of Crystal Growth

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“…[25] Durch das Hydrothermalverfahren lassen sich zwar grçßere KBBF-Kristalle mit einer Dicke bis zu 8 mm züchten, [26] allerdings ist die Konversionseffizienz infolge der Bildung von Überstrukturen und Unregelmäßigkeiten in hydrothermal gezüchteten KBBF-Kristallen signifikant schlechter. [27] Somit ist das Flussverfahren noch immer der geeignetste Ansatz, um große KBBF-Einkristalle mit hoher optischer Homogenität zu züchten, und wird deshalb weiter verfolgt. KBBF enthält unendliche Einzellagen aus 2 1 [Be 2 BO 3 F 2 ] mit K + -Kationen zwischen den Schichten (Abbildungen 2 a,c); die schwachen ionischen K-F-Bindungen wirken als Brücken, um benachbarte Schichten in einem Abstand von 6.25 zu verbinden.…”

Section: Borateunclassified

“…Durch das Flussverfahren lassen sich Kristalle hoher optischer Qualität mit bis zu 3.7 mm Dicke züchten, aus denen brauchbare KBBF‐basierte Bauelemente erhältlich sind [25] . Durch das Hydrothermalverfahren lassen sich zwar größere KBBF‐Kristalle mit einer Dicke bis zu 8 mm züchten, [26] allerdings ist die Konversionseffizienz infolge der Bildung von Überstrukturen und Unregelmäßigkeiten in hydrothermal gezüchteten KBBF‐Kristallen signifikant schlechter [27] . Somit ist das Flussverfahren noch immer der geeignetste Ansatz, um große KBBF‐Einkristalle mit hoher optischer Homogenität zu züchten, und wird deshalb weiter verfolgt.…”

Section: Ergebnisse Und Diskussionunclassified