Lead monoxide: a promising two-dimensional layered material for applications in nonlinear photonics in the infrared band. Issue 26 (24th June 2019)

• Record Type: Journal Article
• Authors: Song, Yufeng; You, Kaixi; Chen, Yunxiang; Zhao, Jinlai; Jiang, Xiantao; Ge, Yanqi; Wang, Yunzheng; Zheng, Jilin; Xing, Chenyang; Zhang, Han
• Is Part Of: Nanoscale. Volume 11:Issue 26(2019)
• Page Start: 12595
• Page End: 12602
• Publication Date: 2019-06-24
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr03167g
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Lead monoxide (PbO), a novel few-layer two-dimensional (2D) material, was theoretically predicted to have an excellent optical response. Abstract : Lead monoxide (PbO), a novel few-layer two-dimensional (2D) material, was theoretically predicted to have an excellent optical response. Herein, the nonlinear optical response of PbO in the infrared region was experimentally investigated. The feasibility of PbO nanosheets as an effective optical saturable absorber was experimentally verified for the first time. Based on the excellent nonlinear optical characteristics, 2D PbO was fabricated as a passive mode locker by depositing onto a fiber patch cord and by decorating on a microfiber, both of which were successfully applied in fiber lasers for the passive mode locking operation. The mode locking pulses of the fiber laser were as short as 650 fs at 1.5 μm. A pulse duration of 5.47 ps with a 1 μm fiber laser was also experimentally verified. Finally, a PbO-decorated microfiber was fabricated as an optical thresholder that can enhance the SNR of a 1 GHz signal up to 6 dB. This finding might facilitate the development of nonlinear photonic devices with high stability and their practical applications in the future.