Intra-cavity dynamics of single-walled carbon nanotubes as the key parameter for regime selection in ultrashort-pulse erbium-doped fiber lasers

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-07-28 DOI:10.1016/j.optlastec.2025.113658

Almikdad Ismaeel , Alexander A. Krylov , Elena.D. Obraztsova

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Abstract

We present an experimental study of intracavity saturation behavior of natural saturable absorbers (SAs) based on single-walled carbon nanotubes (SWCNTs) embedded in an erbium-doped fiber ring laser. Based on intracavity saturation dynamics measurements, the mechanism of passive mode-locking using home-made saturable absorbers composed of either pure SWCNTs or boron nitride-doped SWCNTs with modified characteristics has been investigated to explain the influence of SA properties on operation regimes realized. Through precise manipulation of pump power and SA characteristics, we demonstrate the generation of conservative solitons, harmonically mode-locking solitons, bound vector solitons, soliton molecules (comprising 3,4, and 5 pulses), and dissipative solitons in the erbium-doped fiber ring laser. This investigation reveals the relationship of SWCNT-SA characteristics with USP generation regimes observed, also enabling optimization of the essential features of SWCNT-SAs for effective pulse manipulation. Ultimately, this work demonstrates a stable source of ultra-short pulses with diverse characteristics meeting the requirements of various applications including telecommunications and quantum computing.

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超短脉冲掺铒光纤激光器中单壁碳纳米管腔内动力学特性的研究

我们提出了一项基于单壁碳纳米管（SWCNTs）嵌入掺铒光纤环形激光器的自然饱和吸收剂（SAs）的腔内饱和行为的实验研究。基于腔内饱和动力学测量，研究了由纯SWCNTs或改性氮化硼掺杂SWCNTs组成的自制饱和吸收剂的被动锁模机制，以解释SA性质对实现的操作机制的影响。通过对泵浦功率和SA特性的精确控制，我们证明了在掺铒光纤环形激光器中产生保守孤子、谐波锁模孤子、束缚矢量孤子、孤子分子（包括3、4和5个脉冲）和耗散孤子。这项研究揭示了swcnts - sa特性与观察到的USP产生机制的关系，也使得优化swcnts - sa的基本特征能够有效地操纵脉冲。最终，这项工作证明了一种具有多种特性的稳定超短脉冲源，满足了包括电信和量子计算在内的各种应用的要求。

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