{"title":"Domain-wall dark pulse generation with polyacrylonitrile as saturable absorber","authors":"Xiaoyou Song, Abdulkadir Mukhtar Diblawe, Zian Cheak Tiu, Sameer Salam, Fatimah Ibrahim, Sulaiman Wadi Harun","doi":"10.1007/s12648-024-03384-0","DOIUrl":null,"url":null,"abstract":"<p>We have demonstrated a domain-wall dark pulse by using a polyacrylonitrile film as a saturable absorber (SA) in Erbium-doped fiber laser (EDFL) cavity. The preparation of the polyacrylonitrile thin film SA and the performance analysis of the film were described. The dual wavelengths are stably lased at 1560.43 nm and 1561.17 nm to induce topological defect in temporal domain. Within the pumping range of 97.76–165.26 mW, we observed the dark pulse oscillation in the fiber laser cavity with repetition rate of 0.99 MHz and pulse width of 306 µs. The highest average pulse energy of 6.54 nJ was achieved at pump power of 165.26 mW, with a signal-to-noise ratio of 67 dB. The stable formation of dark pulses in the fiber laser system demonstrates that the polyacrylonitrile thin film SA has significant potential for commercial applications. This advancement not only highlights its promise for future industry use but also establishes a foundation for growth in sustainable technologies.</p>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s12648-024-03384-0","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
We have demonstrated a domain-wall dark pulse by using a polyacrylonitrile film as a saturable absorber (SA) in Erbium-doped fiber laser (EDFL) cavity. The preparation of the polyacrylonitrile thin film SA and the performance analysis of the film were described. The dual wavelengths are stably lased at 1560.43 nm and 1561.17 nm to induce topological defect in temporal domain. Within the pumping range of 97.76–165.26 mW, we observed the dark pulse oscillation in the fiber laser cavity with repetition rate of 0.99 MHz and pulse width of 306 µs. The highest average pulse energy of 6.54 nJ was achieved at pump power of 165.26 mW, with a signal-to-noise ratio of 67 dB. The stable formation of dark pulses in the fiber laser system demonstrates that the polyacrylonitrile thin film SA has significant potential for commercial applications. This advancement not only highlights its promise for future industry use but also establishes a foundation for growth in sustainable technologies.
期刊介绍:
Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.