标题：Promotion impact of thermal oxidation etching to saturable absorption performance of g-C3N4
作者：Qian, Qizhang; Kong, Desheng; Zhao, Shengzhi; Li, Guiqiu; Cheng, Xin; Wang, Nan; Li, Tao; Li, Dechun; Yang, Kejian; Zang, Jie
作者机构：[Qian, Qizhang; Zhao, Shengzhi; Li, Guiqiu; Li, Tao; Li, Dechun; Yang, Kejian; Zang, Jie] Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peop 更多
通讯作者：Li, GQ;Li, GQ
通讯作者地址：[Li, GQ]Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peoples R China;[Li, GQ]Shandong Univ, Shandong Prov Key Lab Laser Technol & Applicat, 更多
来源：OPTICS AND LASER TECHNOLOGY
关键词：g-C3N4 saturable absorber; 2D-materials; Q-switched laser; Infrared; lasers
摘要：A facile thermal modification method based on thermal oxidation etching was successfully developed as an effective way of improving the photoelectric properties of graphite carbon nitride (g-C3N4), and the as-prepared modified g-C3N4 was employed as the saturable absorber (SA) for a passively Q-switched Nd:LLF laser at 1.06 mu m to improve the laser performance. Under the incident pump power of 7.68 W, a pulsed laser output with 110 ns pulse width at 95.5 kHz pulse repetition rate was achieved, which was the narrowest among the g-C3N4 materials used as SAs around 1 mu m.