High-repetition-rate ultrafast fiber lasers enabled by BtzBiI4: a novel bismuth-based perovskite nonlinear optical material

IF 6.6 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2025-06-27 DOI:10.1515/nanoph-2025-0087

Xiaohui Du, Chenyue Liu, Zefei Ding, Yuan Zhao, Cunguang Zhu, Yaoyao Wang, Pengpeng Wang

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引用次数: 0

Abstract

Recent advances in perovskite crystals have highlighted their exceptional optical properties, making them promising candidates for a wide range of photonic applications. However, the exploration of high-repetition-rate laser systems based on these materials remains underdeveloped, hindering their potential in ultrafast laser technologies and related fields such as optical communications and precision metrology. In this study, we present, for the first time, the saturable absorption characteristics of a novel organic–inorganic hybrid perovskite incorporating the heavy metal bismuth (Bi), specifically N-methylbenzothiazoleBiI4 (BtzBiI4). The material was integrated as a saturable absorber (SA) into a passively mode-locking erbium-doped fiber laser. By harnessing the exceptional optical nonlinearity of BtzBiI4-SA, we successfully achieved stable fundamental mode-locking, harmonic mode-locking, and bound-state soliton mode-locking within a single cavity. The fundamental mode-locking yielded pulses with a duration of 844 fs and a signal-to-noise ratio of 66.15 dB. Additionally, the 142nd-order harmonic solitons attained an impressive repetition rate of 1.3202 GHz. These results represent a significant step forward in the realization of high-repetition-rate fiber lasers utilizing perovskite materials. Our findings highlight the remarkable potential of BtzBiI4 as a high-performance nonlinear optical material, paving the way for next-generation ultrafast photonic devices.

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一种新型铋基钙钛矿非线性光学材料BtzBiI4实现的高重复速率超快光纤激光器

钙钛矿晶体的最新进展突出了其特殊的光学特性，使其成为广泛光子应用的有希望的候选者。然而，基于这些材料的高重复率激光系统的探索仍然不发达，阻碍了它们在超快激光技术和相关领域（如光通信和精密计量）的潜力。在这项研究中，我们首次提出了一种含有重金属铋（Bi）的新型有机-无机杂化钙钛矿的饱和吸收特性，特别是n -甲基苯并噻唑olebii4 （BtzBiI4）。将该材料作为可饱和吸收材料集成到被动锁模掺铒光纤激光器中。通过利用BtzBiI4-SA特殊的光学非线性特性，我们成功地在单个腔内实现了稳定的基态锁模、谐波锁模和束缚态孤子锁模。基锁模产生的脉冲持续时间为844 fs，信噪比为66.15 dB。此外，142次谐波孤子的重复频率达到了令人印象深刻的1.3202 GHz。这些结果代表了利用钙钛矿材料实现高重复速率光纤激光器的重要一步。我们的发现突出了BtzBiI4作为高性能非线性光学材料的巨大潜力，为下一代超快光子器件铺平了道路。

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

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.