Enhanced nonlinear optical performance of electro-spun 5C2NA-PEO fibers

IF 3.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Anurag Kumar Singh, Atheena Pramod, Sabari Girisun, Nagalakshmi Ramamoorthy
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引用次数: 0

Abstract

In this study, we synthesized electro-spun fibers of 5-Chloro-2-Nitroaniline (5C2NA) embedded in polyethylene oxide (PEO) in submicron range. We conducted comprehensive analysis of these fibers, including their morphological, structural, vibrational, mechanical, linear and nonlinear optical properties. Nonlinear optical effects such as saturable absorption (SA) and reverse saturable absorption (RSA) are our particular interest of investigation for this report, which play a crucial role in the development of all-optical logic gates and optical limiting devices. The transition between SA and RSA is especially significant for optoelectronic applications. Using the Z-scan technique, we demonstrated the ability of 5C2NA-PEO fibers to show RSA and SA together under varying pump intensities. The nonlinear optical parameters such as nonlinear absorption coefficient and limiting threshold have been calculated and compared with bulk 5C2NA. An enhancement in the nonlinear optical performance has been noticed in fibrous form. The nonlinear absorption has been found to be increased almost five times and optical limiting threshold is reduced three times. Higher nonlinear absorption and lower limiting threshold of the materials always extends its utility for applications. These switching properties of 5C2NA-PEO fibers with enhanced performance hold promise for various applications such as logic gates, optical switching and optical limiting.

电纺5C2NA-PEO光纤非线性光学性能的增强
本研究在亚微米范围内合成了5-氯-2-硝基苯胺(5C2NA)包埋在聚氧化物(PEO)中的电纺丝纤维。我们对这些纤维进行了全面的分析,包括形态、结构、振动、力学、线性和非线性光学性质。非线性光学效应,如饱和吸收(SA)和反饱和吸收(RSA)是我们本报告特别感兴趣的研究,在全光逻辑门和光限幅器件的发展中起着至关重要的作用。SA和RSA之间的过渡对于光电应用尤其重要。使用z扫描技术,我们证明了5C2NA-PEO光纤在不同泵浦强度下同时显示RSA和SA的能力。计算了非线性吸收系数和极限阈值等非线性光学参数,并与块体5C2NA进行了比较。在纤维形式下,非线性光学性能得到了提高。非线性吸收提高了近5倍,光学极限阈值降低了3倍。较高的非线性吸收和较低的极限阈值使材料的应用范围不断扩大。5C2NA-PEO光纤的这些开关特性具有增强的性能,可用于各种应用,如逻辑门,光开关和光限制。
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来源期刊
Optical and Quantum Electronics
Optical and Quantum Electronics 工程技术-工程:电子与电气
CiteScore
4.60
自引率
20.00%
发文量
810
审稿时长
3.8 months
期刊介绍: Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.
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