题目：

Mechanically exfoliated black phosphorus as a new saturable absorber for both Q-switching and mode-locking laser operation

作者：

Yu Chen,¹ Guobao Jiang,² Shuqing Chen,² Zhinan Guo,¹ Xuefeng Yu,³ Chujun Zhao,^1,2 Han Zhang,^1,* Qiaoliang Bao,⁵ Shuangchun Wen,² Dingyuan Tang,⁴ and Dianyuan Fan¹

单位：

¹SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China

²Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China

³Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China

⁴School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore

⁵Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China

摘要：

Black phosphorus (BP), an emerging narrow direct band-gap two-dimensional (2D) layered material that can fill the gap between the semi-metallic graphene and the wide-bandgap transition metal dichalcogenides (TMDs), had been experimentally found to exhibit the saturation of optical absorption if under strong light illumination. By taking advantage of this saturable absorption property, we could fabricate a new type of optical saturable absorber (SA) based on mechanically exfoliated BPs, and further demonstrate the applications for ultra-fast laser photonics. Based on the balanced synchronous twin-detector measurement method, we have characterized the saturable absorption property of the fabricated BPSAs at the telecommunication band. By incorporating the BP-based SAs device into the all-fiber Erbium-doped fiber laser cavities, we are able to obtain either the passive Q-switching (with maximum pulse energy of 94.3 nJ) or the passive mode-locking operation (with pulse duration down to 946 fs). Our results show that BP could also be developed as an effective SA for pulsed fiber or solid-state lasers.

影响因子：

3.488

分区情况：

2区

链接：

https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-10-12823