Defect plays a key role in the optical properties of silver thin films. Herein, we introduced the oxygen vacancy defects by laser modification and fabricated the Ag/ir-MoO_x thin film. The effects of ir-MoO_x on the structure and optical properties of Ag thin films were investigated. We found that laser irradiation and effective silver trap will introduce numerous oxygen vacancy defects. The nonlinear absorption response of Ag/ir-MoO_x was significantly improved compared with that of the single layer Ag. The increased concentration of oxygen vacancies in the composite film will promote the rate of charge transfer and enhance the nonlinear saturation absorption.

中文翻译：

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激光诱导缺陷MoO _x缓冲层上Ag薄膜的非线性吸收的增强

缺陷在银薄膜的光学性能中起关键作用。在本文中，我们采用激光修改引入的氧空位缺陷和制造对于Ag / IR-的MoO _X薄膜。研究了ir-MoO _x对Ag薄膜结构和光学性能的影响。我们发现激光照射和有效的银陷阱会引入许多氧空位缺陷。的Ag / IR-的MoO的非线性吸收响应_X与单层银相比被显著改善。复合膜中氧空位浓度的增加将促进电荷转移速率并增强非线性饱和吸收。