亚波长光纤中深紫外超连续真空产生的理论研究

IF 2 4区物理与天体物理 Q3 OPTICS

Journal of Optics Pub Date : 2024-06-11 DOI:10.1088/2040-8986/ad529e

Weihua Shi, Yuying Gu, Tiantian Zhang

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引用次数: 0

摘要

为了获得深紫外（UV）区的超连续（SC）光谱，提出了一种基于由背景材料 MgF2 组成的亚波长光纤（SWF）的 UV SC 生成方法。利用分步傅里叶法求解了非线性薛定谔方程，全矢量有限元分析了光纤传输特性，并详细数值模拟了泵浦光进入 SC 的演化过程。数值分析结果表明，当峰值功率为 6 kW 的 350 fs 输入脉冲以 λ0 = 400 nm 为中心射入 4 cm 长的 MgF2 SWF 时，SC 光谱的光谱宽度从 229.11 nm 扩展到 2366.68 nm。这种深紫外 SC 光谱有很多应用，尤其是在电信和军事领域。

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A theoretical study on deep ultraviolet supercontinuum generation in subwavelength optical fiber

In order to obtain supercontinuum (SC) spectra in the deep ultraviolet (UV) region, a generation method of UV SC is proposed based on subwavelength fiber (SWF) composed of background material MgF₂. The nonlinear Schrödinger equation is solved by the split-step Fourier method, the optical fiber transmission characteristics are analyzed by the full-vector finite element, and the evolution of the pumping light into SC is numerically simulated in detail. The results of the numerical analysis show that the SC spectra have a spectral width extending from 229.11 nm to 2366.68 nm when 350 fs input pulses of 6 kW peak power, centered about λ₀ = 400 nm, are launched into a 4 cm long MgF₂ SWF. Such a deep UV SC spectrum has many applications, especially in telecommunication and military fields.

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来源期刊

Journal of Optics OPTICS-

CiteScore

4.50

自引率

4.80%

发文量

237

审稿时长

1.9 months

期刊介绍： Journal of Optics publishes new experimental and theoretical research across all areas of pure and applied optics, both modern and classical. Research areas are categorised as: Nanophotonics and plasmonics Metamaterials and structured photonic materials Quantum photonics Biophotonics Light-matter interactions Nonlinear and ultrafast optics Propagation, diffraction and scattering Optical communication Integrated optics Photovoltaics and energy harvesting We discourage incremental advances, purely numerical simulations without any validation, or research without a strong optics advance, e.g. computer algorithms applied to optical and imaging processes, equipment designs or material fabrication.