{"title":"Mode-locked erbium-doped fiber laser based on stable narrow-gap semiconductor Nb2SiTe4 quantum dots","authors":"","doi":"10.1016/j.optlastec.2024.112034","DOIUrl":null,"url":null,"abstract":"<div><div>Nb<sub>2</sub>SiTe<sub>4</sub> (NST) has been shown air-stable with narrow band gap, high electron mobility, excellent absorption properties, and anisotropic optical properties. In this research, liquid phase exfoliation method was employed to prepare NST QDs which were subsequently applied to the tapered fiber to form saturable absorbers for erbium-doped fiber laser. A two-armed balanced probing system was used to assess the nonlinear optical properties, resulting a saturation intensity of 2.36 KW/cm<sup>2</sup> and a modulation depth of 9.56%. Following the implementation of the NST QDs-SA to Er-doped fiber laser (EDFL) system, stable mode-locked pulses were produced exhibiting the center wavelength of 1574.43 nm, the repetition frequency of 21.50 MHz, and the pulse duration of 747 fs. Those results demonstrate the potential of NST as a narrowband SA, offering new avenues for the design of air-stable ultrafast photonic devices.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224014920","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Nb2SiTe4 (NST) has been shown air-stable with narrow band gap, high electron mobility, excellent absorption properties, and anisotropic optical properties. In this research, liquid phase exfoliation method was employed to prepare NST QDs which were subsequently applied to the tapered fiber to form saturable absorbers for erbium-doped fiber laser. A two-armed balanced probing system was used to assess the nonlinear optical properties, resulting a saturation intensity of 2.36 KW/cm2 and a modulation depth of 9.56%. Following the implementation of the NST QDs-SA to Er-doped fiber laser (EDFL) system, stable mode-locked pulses were produced exhibiting the center wavelength of 1574.43 nm, the repetition frequency of 21.50 MHz, and the pulse duration of 747 fs. Those results demonstrate the potential of NST as a narrowband SA, offering new avenues for the design of air-stable ultrafast photonic devices.
期刊介绍：
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
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•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
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•developments in imaging processing and systems
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