国产桃色在线成免费视频_欧美中日韩国产精品_(凹凸18+)AV免费在线观看_一个人看的片免费高清www_一做a性色生活片久久无码_综合色免费在线精品视频_欧美老少交换另类_(凹凸影业)国产亚洲人成网站在线观看_午夜不卡老子电影影院_中文国产欧美在线

2016年12月29日, 深圳六碳科技和深圳大學(xué)閆培光教授團(tuán)隊(duì)在 Nanoscale 上發(fā)表論文: Large-area tungsten disulfide for ultrafast photonics

深圳六碳科技作為作者單位,負(fù)責(zé)二維材料的制備

Abstract
Two-dimensional (2D) layered transition metal dichalcogenides (TMDs) have attracted significant interest in various optoelectronic applications due to their excellent nonlinear optical properties. One of the most important applications of TMDs is to be employed as an extraordinary optical modulation material (e.g., the saturable absorber (SA)) in ultrafast photonics. The main challenge arises while embedding TMDs into fiber laser systems to generate ultrafast pulse trains and thus constraints their practical applications. Herein, few-layered WS2 with a large-area was directly transferred on the facet of the pigtail and acted as a SA for erbium-doped fiber laser (EDFL) systems. In our study, WS2 SA exhibited remarkable nonlinear optical properties (e.g., modulation depth of 15.1% and saturable intensity of 157.6 MW cm?2) and was used for ultrafast pulse generation. The soliton pulses with remarkable performances (e.g., ultrashort pulse duration of 1.49 ps, high stability of 71.8 dB, and large pulse average output power of 62.5 mW) could be obtained in a telecommunication band. To the best of our knowledge, the average output power of the mode-locked pulse trains is the highest by employing TMD materials in fiber laser systems. These results indicate that atomically large-area WS2 could be used as excellent optical modulation materials in ultrafast photonics.

?