Domain-wall dark pulse generation with polyacrylonitrile as saturable absorber

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Xiaoyou Song, Abdulkadir Mukhtar Diblawe, Zian Cheak Tiu, Sameer Salam, Fatimah Ibrahim, Sulaiman Wadi Harun
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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.

Abstract Image

以聚丙烯腈为可饱和吸收体的域壁暗脉冲发生器
我们利用聚丙烯腈薄膜作为掺铒光纤激光器(EDFL)腔内的可饱和吸收体(SA),演示了一种域壁暗脉冲。研究人员介绍了聚丙烯腈薄膜可饱和吸收体的制备方法和性能分析。在 1560.43 nm 和 1561.17 nm 波长处稳定地发射双波长激光,以诱导时域拓扑缺陷。在 97.76-165.26 mW 的泵浦范围内,我们在光纤激光腔中观测到了重复频率为 0.99 MHz、脉冲宽度为 306 µs 的暗脉冲振荡。在泵浦功率为 165.26 mW 时,获得的最高平均脉冲能量为 6.54 nJ,信噪比为 67 dB。光纤激光系统中暗脉冲的稳定形成表明,聚丙烯腈薄膜 SA 在商业应用方面具有巨大潜力。这一进步不仅彰显了其在未来工业应用中的前景,还为可持续技术的发展奠定了基础。
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来源期刊
Indian Journal of Physics
Indian Journal of Physics 物理-物理:综合
CiteScore
3.40
自引率
10.00%
发文量
275
审稿时长
3-8 weeks
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.
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