Laser & Optoelectronics Progress, Volume. 59, Issue 15, 1516019(2022)
Fabrication of Periodic Nanostructures on the Surface of Chalcogenide Glass using Ultrafast Laser
As a special infrared optical glass, chalcogenide glass shows great advantages in the application of photonic devices in the mid-infrared band. Laser-induced periodic surface structures, whose periods are close to or less than the incident laser wavelength, have broad application prospects in fabricating micro-optical infrared devices that exceed the diffraction limit. This study investigates the evolution process of the periodic structure induced by femtosecond laser on As2S3 glass with a pulse number using two processing methods, single point and laser direct writing. First, the formation mechanism of two different periodic structures (low and high spatial frequencies) formed under low and high pulse numbers was analyzed. Then, a large-area periodic structure was fabricated on the surface of As2S3 glass using femtosecond laser direct writing technology, and the optical color properties of the periodic structure were tested and explored.
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Xiaohan Yu, Dongfeng Qi, Wenju Zhou, Mengxia Chen, Xiang Shen, Shixun Dai, Hongyu Zheng. Fabrication of Periodic Nanostructures on the Surface of Chalcogenide Glass using Ultrafast Laser[J]. Laser & Optoelectronics Progress, 2022, 59(15): 1516019
Category: Materials
Received: Apr. 26, 2022
Accepted: Jun. 20, 2022
Published Online: Jul. 27, 2022
The Author Email: Qi Dongfeng (qidongfeng@sdut.edu.cn), Zheng Hongyu (zhenghongyu@sdut.edu.cn)