Continuous harmonic mode-locked pulsed ultrafast fiber laser based on PtS2 saturable absorber

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-10-28 DOI:10.1016/j.jlumin.2024.120958

Shixian Sun , Yutian He , Yu Han , Guangzhao Zhu , Xinxin Shang , Lezheng Wang , Yunqi Tang , Keyi Li , Hao Tan , Cheng Lu , Wenfei Zhang , Guomei Wang , Caixun Bai , Zhao Li , Nannan Xu , Huanian Zhang , Shenggui Fu

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引用次数: 0

Abstract

Saturable absorbers (SAs) play an important role in mode-locked fiber lasers. The search for SAs with excellent modulation properties has become a hot topic in the field of ultrafast photonics. PtS₂ is a ideal material for SA due to its suitable band gap and Easily peelable layer structure. We prepared PtS₂-SA by liquid-phase exfoliation (LPE) and tapered fiber. Subsequently, we measured the modulation depth of the prepared SA using the two-arm detection method as 6.4 %, and the saturation intensity is 4.5 MW/cm². By varying the input power in the annular cavity, a conventional solitons (CS) with a center wavelength is 1530.3 nm and a repetition frequency of 6.1 MHz was obtained. Continuing to increase the power, a stable second-fourth orders harmonic mode-locked (HML) was obtained. Our work shows that PtS₂-SA has excellent modulation in mode-locked fiber lasers. It also proves that PtS₂ has good saturable absorption properties and improves the knowledge of research workers about the performance of PtS₂. There is hope in future research work to further exploit the output properties of PtS_2.

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基于 PtS2 可饱和吸收体的连续谐波锁模脉冲超快光纤激光器

可饱和吸收体（SA）在锁模光纤激光器中发挥着重要作用。寻找具有出色调制特性的可饱和吸收体已成为超快光子学领域的热门话题。PtS2 具有合适的带隙和易于剥离的层结构，是一种理想的 SA 材料。我们通过液相剥离（LPE）和锥形光纤制备了 PtS2-SA。随后，我们利用双臂检测法测得制备的 SA 的调制深度为 6.4%，饱和强度为 4.5 MW/cm2。通过改变环形腔中的输入功率，获得了中心波长为 1530.3 nm、重复频率为 6.1 MHz 的常规孤子（CS）。继续增加功率，可以获得稳定的二阶至四阶谐波锁模（HML）。我们的工作表明，PtS2-SA 在锁模光纤激光器中具有出色的调制性能。这也证明了 PtS2 具有良好的可饱和吸收特性，增进了研究人员对 PtS2 性能的了解。未来的研究工作有望进一步开发 PtS2 的输出特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.