GHz harmonic mode-locked dual-pumped laser based on nonlinear multimode interference

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2026-07-01 Epub Date: 2026-02-13 DOI:10.1016/j.yofte.2026.104583

Ziyi Fu , Qi Xiao , Ruiqi Wang , Tianye Huang , Hongbo Zheng , Mingqi Fan , Jianxing Pan , Zhuo Cheng , Jing Zhang , Zhichao Wu , Xiang Li , Perry Ping Shum

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引用次数: 0

Abstract

Ultrafast lasers can generate high-repetition-rate ultrashort pulses through various mode-locking mechanisms. However, research on generating high-repetition-rate pulses based on nonlinear multimode interference is still relatively limited. In this paper, we propose and demonstrate a gigahertz (GHz) harmonic mode-locked dual-pumped laser based on nonlinear multimode interference (NL-MMI), which is achieved by enhancing the nonlinearity and compensating the losses through pumping the hybrid NL-MMI saturable absorber (SA). A stable mode-locking was achieved with a pulse width of 0.66 ps and a repetition rate as high as 1.36 GHz, corresponding to the 66th harmonic of the fundamental frequency. Moreover, the threshold of mode-locking is effectively reduced through pumping the hybrid NL-MMI SA. This study provides a new concept and method for the design of low-threshold mode-locking and high-repetition-frequency lasers.

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基于非线性多模干涉的GHz谐波锁模双泵浦激光器

超快激光器可以通过各种锁模机制产生高重复率的超短脉冲。然而，基于非线性多模干涉产生高重复率脉冲的研究仍然相对有限。本文提出并演示了一种基于非线性多模干涉（NL-MMI）的千兆赫（GHz）谐波锁模双泵浦激光器，该激光器通过泵送混合NL-MMI可饱和吸收体（SA）来增强非线性并补偿损耗。脉冲宽度为0.66 ps，重复频率高达1.36 GHz，对应于基频的66次谐波，实现了稳定的锁模。此外，通过泵送混合NL-MMI SA，有效地降低了锁模阈值。该研究为低阈值锁模高重复频率激光器的设计提供了新的思路和方法。

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

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.