摘要
An effective and simple method is proposed for fabricating the micro/nano hybrid structures on metal surfaces by adjusting femtosecond laser fluence,scanning interval,and polarization.The evolution of surface morphology with the micro/nano structures is discussed in detail.Also,the mechanism of light absorption by the micro/nano hybrid structures is revealed.Compared with the typical periodic light-absorbing structures,this type of micro/nano hybrid structures has an ultralow average reflectivity of 2%in the 250–2300 nm spectral band and the minimum 1.5%reflectivity in UV band.By employing this method,large areas of the micro/nano hybrid structures with high consistency could be achieved.
作者
Xun Li
Ming Li
Hongjun Liu
李珣;李明;刘红军(State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics of CAS,Xi'an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)
基金
the National Key R&D Program(No.2018YFB1107404)
the MajorScientific and Technological Projects in Shaanxi Province(No.2018zdzx01-03-01)
the Key Research and Development Program of ShaanxiProvince(Nos.S2019-YF-ZDCXL-ZDLGY-0253 and S2020-YFZDCXL-ZDLGY-0021)。
