1D Bi Ribbon/[PO4] Synergy-Driven Bismuth Phosphates for Ultraviolet Nonlinear Optical Crystals with Large SHG and Birefringence

Abstract

By leveraging second-harmonic generation (SHG) capabilities, ultraviolet (UV) nonlinear optical (NLO) crystals can efficiently produce UV coherent light and are essential components for advancing UV solid-state laser systems. Herein, two new bismuth phosphates, Rb1.32Bi3.56P2O11 (I) and K1.08Bi3.64P2O11 (II), were synthesized via a high-temperature melt method. Of them, Rb1.32Bi3.56P2O11 exhibits a significant phase-matching SHG response (2.8 × KDP) and large birefringence (0.062 @ 532 nm, 0.053@1064 nm), along with an expanded UV transmission window. Moreover, theoretical analyses revealed that the optimized optical polarizability of Rb1.32Bi3.56P2O11 primarily arises from the cooperative effects of the one-dimensional (1D) polycationic Bi(2)Bi(2)×Bi(1)Bi(1)×Bi(1)Bi(1)×Bi(2)Bi(2) ribbons and [PO4] tetrahedron. We believe the work will provide a valuable strategy to design UV NLO materials with good performances.

Supplementary files

Article information

Article type
Research Article
Submitted
16 Jun 2025
Accepted
09 Aug 2025
First published
16 Aug 2025

Inorg. Chem. Front., 2025, Accepted Manuscript

1D Bi Ribbon/[PO4] Synergy-Driven Bismuth Phosphates for Ultraviolet Nonlinear Optical Crystals with Large SHG and Birefringence

L. Wu, X. Leng, B. Jiang, X. Fu, Y. Huang, X. Yu, Q. Jing and Z. Chen, Inorg. Chem. Front., 2025, Accepted Manuscript , DOI: 10.1039/D5QI01322D

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