氧化石墨烯/二氧化钛(GO/TiO2)纳米棒的合成及其作为无源 Q 开关光纤激光器饱和吸收体的应用。

IF 4.4 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Nanomaterials Pub Date : 2024-10-20 DOI:10.3390/nano14201682
Zain Ul Abedin, Ajaz Ul Haq, Rizwan Ahmed, Tahani A Alrebdi, Ali M Alshehri, Muhammad Irfan, Haroon Asghar
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引用次数: 0

摘要

我们报告了利用氧化石墨烯/二氧化钛(GO/TiO2)纳米棒作为可饱和吸收体,通过掺铒光纤激光器(EDFL)实现无源 Q 开关脉冲操作的情况。氧化石墨烯/二氧化钛纳米棒采用溶胶-凝胶辅助水热法制造。然后使用场发射扫描电子显微镜(FE-SEM)、能量色散 X 射线光谱(EDS)和漫反射光谱(DRS)对 GO/TiO2 纳米棒的光学和物理特性进行了表征。为了研究基于 GO/TiO2 SA 的 Q 开关 EDFL 的性能,利用内德克斯匹配凝胶的粘附效应,将制备的纳米棒机械沉积在光纤套圈上。纳米棒 SA 的这种集成方式可在泵功率为 17.5 mW 时启动自启动 Q 开关操作,并可持续到 306.9 mW。当泵功率范围从 17.5 mW 调整到 306.9 mW 时,发射波长从 1564.2 nm 变为 1562.9 nm,脉冲重复率从 13.87 kHz 增加到 83.33 kHz,脉冲宽度从 30.27 µs 减小到 3.75 µs。此外,在最大泵浦功率为 306.9 mW 时,激光器的平均输出功率为 0.74 mW,峰值功率为 1.54 mW,脉冲能量为 8.88 nJ。此外,本研究还探讨了 GO/TiO2 损坏阈值以及所提议的 EDFL 系统的长期稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the Synthesis of Graphene Oxide/Titanium Dioxide (GO/TiO2) Nanorods and Their Application as Saturable Absorbers for Passive Q-Switched Fiber Lasers.

We report passively Q-switched pulse operation through an erbium-doped fiber laser (EDFL) utilizing graphene oxide/titania (GO/TiO2) nanorods as a saturable absorber. The GO/TiO2 nanorods were fabricated using a Sol-gel-assisted hydrothermal method. The optical and physical characterization of the GO/TiO2 was then characterized using a field-emission-scanning electron microscope (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), and diffuses reflectance spectroscopy (DRS). To investigate the performance of the Q-switched EDFL based on the GO/TiO2 SA, the prepared nanorods were mechanically deposited on the fiber ferrule employing adhesion effects of in-dex-matching gel. This integration of the nanorod SA resulted in a self-starting Q-switching opera-tion initiated at a pump power of 17.5 mW and sustained up to 306.9 mW. When the pump range was tuned from 17.5 to 306.9 mW, the emission wavelength varied from 1564.2 to 1562.9 nm, pulse repetition rates increased from 13.87 kHz to 83.33 kHz, and pulse width decreased from 30.27 µs to 3.75 µs. Moreover, at the maximum pump power of 306.9 mW, the laser exhibited an average output power of 0.74 mW, a peak power of 1.54 mW, and a pulse energy of 8.88 nJ. Furthermore, this study investigates the GO/TiO2 damage threshold and prolonged stability of the proposed EDFL system.

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来源期刊
Nanomaterials
Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
8.50
自引率
9.40%
发文量
3841
审稿时长
14.22 days
期刊介绍: Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.
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