Gold filled in Fresnel zone plate fabricated by femtosecond laser on fiber tip

被引：7
|
作者：
Xu, Cong [1 ]
Zhang, Fan [2 ]
Lu, Shengqiang [1 ]
Zhong, Shunshun [1 ]
Chu, Dongkai [3 ]
Duan, Jian [1 ]
机构：
[1] Cent South Univ, Coll Mech & Elect Engn, State Key Lab High Performance Complex Mfg, Changsha 410083, Peoples R China
[2] Cent South Univ, Sch Automat, Changsha 410083, Peoples R China
[3] Shandong Univ, Ctr Adv Jet Engn Technol CaJET, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2021年 / 64卷
基金：
中国国家自然科学基金;
关键词：
Fresnel zone plate; Femtosecond laser direct writing; Light intensity distribution; Multimode fiber;
D O I：
10.1016/j.yofte.2021.102572
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a method to fabricate Fresnel zone plate (FZP) on the multimode fiber (MMF) tip by combining femtosecond laser direct writing with coating, polishing and chemical etching. After laser processing, the fiber tip coated by gold was polished to obtain a clear unprocessed region with high transmittance and a processed area filled with gold. By launching an 850 nm laser into the MMF, the light intensity distribution and coupling law of the fabricated FZP are studied. The experimental results indicate that the laser is focused at a distance of 900 mu m out of the FZP.
引用
收藏
页数：6
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