Fabrication of crystalline &#946;-BaB2O4 thin films for nonlinear optical applications by liquid phase epitaxy

Junfang Liu; Guoqing Zhou; Xiaoming He; Jun Xu; Liejia Qian

doi:10.1117/12.573465

12 January 2005 Fabrication of crystalline β-BaB₂O₄ thin films for nonlinear optical applications by liquid phase epitaxy

Junfang Liu, Guoqing Zhou, Xiaoming He, Jun Xu, Liejia Qian

Author Affiliations +

Proceedings Volume 5632, Light-Emitting Diode Materials and Devices; (2005) https://doi.org/10.1117/12.573465
Event: Photonics Asia, 2004, Beijing, China

Abstract

Thin films of beta barium borate (β-BBO) have been prepared by liquid phase epitaxy on Sr²⁺-doped α-BBO (001) substrates. The thin films were characterized by X-ray diffraction and X-ray rocking curve. The results of X-ray diffraction indicate that the films show highly (00l) preferred orientation on (001)-oriented substrates. The full width at half-maximum of the rocking curve for the film is as low as 676.6 arcsec, which shows the high crystallinity of the thin film. The absorption edge of β-BBO on Sr²⁺-doped α-BBO substrate is 190 nm. The films show second harmonic generation of 400 nm light upon irradiation with 800 nm Ti: Sapphire femtosecond laser light. These results reveal the possibility of fabricating β-BBO (001) films on (001)-oriented Sr²⁺-doped α-BBO substrates by LPE.

Citation Download Citation

Junfang Liu, Guoqing Zhou, Xiaoming He, Jun Xu, and Liejia Qian "Fabrication of crystalline β-BaB₂O₄ thin films for nonlinear optical applications by liquid phase epitaxy", Proc. SPIE 5632, Light-Emitting Diode Materials and Devices, (12 January 2005); https://doi.org/10.1117/12.573465

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