The deep ultraviolet (λ<200nm) nonlinear optical (NLO) crystal is the core component of the all-solid-state deep-UV laser. At present, only the KBe2BO3F2 (KBBF) crystal realizes the direct six-fold deep ultraviolet laser of Nd:YAG (wavelength = 177.3). Nm) output, however, severe layered habits constrain the commercial production and practical application of KBBF. For decades, the design and synthesis of a new generation of deep-UV nonlinear optical crystals has been the direction of research.
The Ye Ning Task Force of the Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, under the auspices of the National Outstanding Youth Fund and the Chinese Academy of Sciences Class B Strategic Pilot Science and Technology Project, in the research of a new generation of deep ultraviolet nonlinear optical crystals Made breakthrough progress. The structure based on KBBF is a design template. While maintaining its structural and performance advantages, the two layers of deep ultraviolet light which effectively overcome the layered habit are synthesized by strengthening the interlayer connection by NH···F hydrogen bond and Be-F ion bond. Nonlinear optical crystals NH4Be2BO3F2 (ABBF) and Be2BO3F (γ-BBF). The UV cut-off edge, birefringence and frequency doubling effects of ABBF and γ-BBF are very close to or better than KBBF, making their Class I shortest phase matching wavelengths reach 173.9 nm and 146 nm, respectively, demonstrating excellent deep UV light output potential. It is a promising deep UV nonlinear optical crystal.
Related research results were published in "Angew. Chem. Int. Ed." and further research work is underway.
Previously, the research team also made a series of research progress in the design, synthesis, crystal growth and nonlinear performance of UV and deep UV NLO materials. The relevant results were published in J. Mater. Chem. C, 2018, DOI: 10.1039/ C8TC01319E; J. Am. Chem. Soc., 2018, 3884-3887; J. Am. Chem. Soc., 2018, 140, 3884; Chem. Commun., 2018, 54, 1445; Chem. Commun., 2017, 53, 9398; J. Mater. Chem. C, 2017, 5, 8758; Chem. Mater 2017, 2, 896; Chem. Mater. 2016, 28, 9122; Chem. Mater. 2016, 28, 2301; Chem. Mater 2015, 27, 7520.
Zinc Alloy Electromechanical,Custom Aluminum Zinc Alloy,Zinc Aluminum Alloy Die Casting,Custom Gasoline Engine Shell
Dongguan Metalwork Technology Co., LTD. , https://www.dgdiecastpro.com