PtTe2-based high-order harmonic (368 MHz) ultrafast fiber laser

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical Fiber Technology Pub Date : 2025-02-11 DOI:10.1016/j.yofte.2025.104159

Yutian He , Yan Xu , Shixian Sun , Weijie Xu , Yu Wei , Fei Wang , Mingzhi Sun , Cheng Lu , Wenfei Zhang , Guomei Wang , Caixun Bai , Zhao Li , Huanian Zhang , Nannan Xu , Shenggui Fu

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Abstract

This paper investigates the application of PtTe₂ as a saturable absorber (SA) in Er-doped fiber lasers (EDFL). We obtained PtTe₂-SA based on tapered optical fiber while using liquid phase exfoliation (LPE). The modulation depth of PtTe₂-SA reached 7.1 %,demonstrating excellent nonlinear absorption characteristics. An ultrafast fiber laser based on PtTe₂-SA was designed and constructed. Both conventional soliton (CS) and higher-order harmonic mode-locking (HML) were realized. The CS was realized with the central wavelength of 1559.4 nm and the pulse width of 919 fs, at a pump power of 350 mW. Exhibiting a repetition frequency of 4.72 MHz and a signal-to-noise ratio of 60.3 dB. Increasing the pump power to 422 mW and 726 mW resulted in the generation of 2nd order and 78th order HML, respectively. The 78th order HML achieved the repetition frequency of up to 368 MHz and the pulse width of 1.93 ps. These results indicate that PtTe₂-SA exhibits excellent optical modulation properties in EFDL while holds promise for applications in high repetition frequency fiber lasers.

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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.