A remarkable solar-blind ultraviolet nonlinear optical crystal with comprehensive performance and enhanced thermal stability†

IF 6 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Materials Chemistry Frontiers Pub Date : 2025-01-22 DOI:10.1039/D4QM01036A

Jialin Zeng, Shuangcheng Li, Ruibiao Fu, Zilong Geng, Yiting Luo, Senfu Lei and Zuju Ma

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Abstract

Solar-blind ultraviolet (UV) nonlinear optical (NLO) crystals are urgently demanded for their important applications in modern lasers. Herein, a remarkable solar-blind UV NLO crystal, K[H₂N(CH₂COO)₂], was rationally obtained by tuning alkali metal cations. Interestingly, it was noted that the [H₂N(CH₂COO)₂] groups were held between the helical chains in an ordered arrangement that superimposed their microscopic second-order susceptibilities. Notably, K[H₂N(CH₂COO)₂] exhibited comprehensive NLO performance, including a strong phase-matching SHG response of 1.6 × KDP at 1064 nm and 0.6 × BBO at 532 nm, a suitable birefringence of 0.124 at 1064 nm, a high LDT up to 332 MW cm⁻², a distinct UV cutoff edge of 216 nm, a wide high-transparency window covering 246–1554 nm, the shortest phase-matching wavelength extending to 250 nm and easy growth of centimetre-sized crystals. K[H₂N(CH₂COO)₂] remained thermally stable up to 210 °C in an air atmosphere. This research offers a new approach to further explore solar-blind UV NLO crystals.

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来源期刊

Materials Chemistry Frontiers Materials Science-Materials Chemistry

CiteScore

12.00

自引率

2.90%

发文量

313

期刊介绍： Materials Chemistry Frontiers focuses on the synthesis and chemistry of exciting new materials, and the development of improved fabrication techniques. Characterisation and fundamental studies that are of broad appeal are also welcome. This is the ideal home for studies of a significant nature that further the development of organic, inorganic, composite and nano-materials.

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