(Press-News.org)
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).
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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
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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.
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To ...
Francis Crick Institute press release
Under strict embargo: 16:00hrs BST 21 July 2023
Peer reviewed
Experimental study
Cells
Research reveals the scale of disorder underpinning Motor Neurone Disease
Researchers at the Francis Crick Institute and UCL have shown that hundreds of proteins and mRNA molecules are found in the wrong place in nerve cells affected by Motor Neuron Disease (MND), also known as Amyotrophic Lateral Sclerosis (ALS).
ALS is a rapidly progressing and devastating condition that causes paralysis by affecting ...
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Researchers from the University of Liverpool have created a biomedical compound that has the potential to stop the spread of breast cancer. A recently published paper details these early findings.
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Researchers from King’s College London looked at whether infection with COVID-19 affected performance in two rounds of online cognitive testing that took place in 2021 and 2022. Data was collected for over 3,000 participants of the COVID Symptom Study Biobank study, across 12 tasks that tested memory, attention, reasoning, processing speed and ...
A scientist from Northumbria University has been awarded almost half a million pounds to develop a new technology which could transform deep-space communication, radio astronomy, medical imaging and airport security scanning.
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Benjamin Franklin may be best known as the creator of bifocals and the lightning rod, but a group of University of Notre Dame researchers suggest he should also be known for his innovative ways of making (literal) money.
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Researchers at Baylor College of Medicine and collaborating institutions are developing a strategy to predict the response of triple negative breast cancer (TNBC) to chemotherapy, which would be a valuable tool for physicians deciding on the treatment with better probability of success on an individual basis. The study appears in Cancer Research Communications, a journal of the American Association for Cancer Research.
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