Two types of ultrafast mode-locking operations generation from an Er-doped fiber laser based on germanene nanosheets

Saturable absorbers as passive modulators in passively mode-locked fiber lasers play a crucial role in the generation of ultrashort pulses. Germanene, a graphene-like two-dimensional material with fast carrier relaxation time and large nonlinear absorption coefficient comparable to that of graphene, is a saturable absorber material with very fast response.

Researchers led by Prof. Wei Xia at University of Jinan (UJN), are interested in modulation switches in fiber lasers, and two-dimensional material saturable absorbers have been a hot research topic in recent years. Two-dimensional materials make up for the disadvantages of traditional artificial saturable absorbers such as nonlinear polarization rotation and nonlinear amplification loop mirror with poor environmental stability and complex structure. And germanene, as an emerging two-dimensional material, has excellent nonlinear optical properties, and fully exploring its potential performance has a positive contribution to the development of passive modulators. The researchers predict its potential applications. Using it as a saturable absorber, the femtosecond pulse and higher energy noise-like pulse can be obtained.

The work entitled “Two types of ultrafast mode-locking operations generation from an Er-doped fiber laser based on germanene nanosheets” was published on Frontiers of Optoelectronics (published on Jun. 7, 2023).

###

Reference: Baohao Xu, Zhiyuan Jin, Lie Shi, Huanian Zhang, Qi Liu, Peng Qin, Kai Jiang, Jing Wang, Wenjing Tang, Wei Xia. Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets. Front. Optoelectron., 2023, 16(2): 13 https://doi.org/10.1007/s12200-023-00068-1

About Higher Education Press

Founded in May 1954, Higher Education Press Limited Company (HEP), affiliated with the Ministry of Education, is one of the earliest institutions committed to educational publishing after the establishment of P. R. China in 1949. After striving for six decades, HEP has developed into a major comprehensive publisher, with products in various forms and at different levels. Both for import and export, HEP has been striving to fill in the gap of domestic and foreign markets and meet the demand of global customers by collaborating with more than 200 partners throughout the world and selling products and services in 32 languages globally. Now, HEP ranks among China's top publishers in terms of copyright export volume and the world’s top 50 largest publishing enterprises in terms of comprehensive strength.

The Frontiers Journals series published by HEP includes 28 English academic journals, covering the largest academic fields in China at present. Among the series, 12 have been indexed by SCI, 6 by EI, 2 by MEDLINE, 1 by A&HCI. HEP's academic monographs have won about 300 different kinds of publishing funds and awards both at home and abroad.

About Frontiers of Optoelectronics

Frontiers of Optoelectronics (FOE) aims at introducing the most recent research results and the cutting edge improvements in the area of photonics and optoelectronics. It is dedicated to be an important information platform for rapid communication and exchange between researchers in the related areas. The journal publishes review articles, research articles, letters, comments, special issues, and so on. The Editors-in-Chief are Academician Qihuang Gong from Peking University and Prof. Xinliang Zhang from Xidian University & Huazhong University of Science and Technology. FOE has been indexed by ESCI, EI, SCOPUS, DOAJ, PubMedCentral, CSCD, Source Journals for Chinese Scientific and Technical Papers and Citations, etc. FOE is fully open access since 2022.