GHz-selectable passive harmonic mode-locking fiber laser based on phosphorus-assisted hybrid mechanism

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-04-29 DOI:10.1016/j.optlastec.2025.113064

Renshun Pan , Lu Sui , Yanwei Fu , Wanzhuo Ma , Zhi Liu , Keyan Dong

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引用次数: 0

Abstract

A hybrid mode-locking erbium-doped fiber laser that effectively combines nonlinear polarization rotation (NPR) effect and black phosphorus saturable absorber (BP-SA) mode-locking was designed and constructed. The output pulse has a fundamental repetition rate of 6.52 MHz and a center wavelength of 1562 nm. The direct output pulse width is 3.02 ps, and the conversion efficiency is 13.5 %. Selectable harmonic mode-locking pulse trains from first to 158 th order was obtained, corresponding to a repetition rate of 6.52 MHz to 1.03 GHz. The signal-to-noise ratios at high frequencies are all greater than 60 dB, and the highest signal-to-noise ratio measured at 985 MHz is 75.74 dB. Compared with single mechanism mode-locking lasers, the hybrid laser effectively reduces the harmonic pulse mode-locking pumping threshold, which is more conducive to mode-locking self-starting and mode-locking state stability. The laser provides a stable light source for the development of practical optical frequency combs, which are important for precision measurements.

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基于磷辅助混合机制的ghz可选无源谐波锁模光纤激光器

设计并构建了一种有效结合非线性偏振旋转（NPR）效应和黑磷饱和吸收剂（BP-SA）锁模特性的掺铒光纤混合锁模激光器。输出脉冲的基本重复频率为6.52 MHz，中心波长为1562 nm。直接输出脉冲宽度为3.02 ps，转换效率为13.5%。获得了1 ~ 158阶的可选谐波锁模脉冲序列，对应于6.52 MHz ~ 1.03 GHz的重复频率。在高频处的信噪比均大于60 dB，在985 MHz处测得的最高信噪比为75.74 dB。与单机制锁模激光器相比，混合激光器有效降低了谐波脉冲锁模泵浦阈值，更有利于锁模自启动和锁模状态稳定。该激光器为研制实用的光学频率梳提供了稳定的光源，对精密测量具有重要意义。

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

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems