Chitosan capped nickel oxide nanoparticles as a saturable absorber in a tunable passively Q-switched erbium doped fiber laser

Ahmad, Harith; Reduan, Siti Aisyah; Yusoff, Norazriena

doi:10.1039/c8ra04380a

Cited by 28 publications

(6 citation statements)

References 74 publications

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“…This verifies the creation of the cubic phase of NiO NPs [9,10]. The NiO nanoparticles' sharp peaks reveal their great crystallinity, and the absence of any additional peaks demonstrates the sample's high purity and absence of impurities [11]. The Scherrer equation is used to compute the NiO nanoparticles' mean crystallite size [12], which is found to be 21 nm.…”

Section: Xrd and Tem Analysismentioning

confidence: 73%

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

Salim

Tarabiah

2023

J Inorg Organomet Polym

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The solution casting process was used to fabricate nanocomposite samples composed of carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and filled with varied concentrations of nickel oxide nanoparticles (NiO NPs). The effect of NiO nanoparticles on the structural, optical, and electrical properties of the pure CMC/PVA/PEDOT:PSS mixture was studied and discussed. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis revealed that the NiO NPs are cubic in phase and range in size from 10 to 55 nm. The XRD analysis of the incorporated films indicated that the NiO NPs crystallinity increased at expense of the CMC/PVA/PEDOT:PSS composites. Fourier Transform Infrared (FTIR) examination revealed the main absorption vibrational peaks of CMC, PVA, PEDOT:PSS, and Ni-O, whose intensities changed randomly after filling, revealing the intermolecular interaction between the nanocomposite components. The UV and visible range absorption spectra showed a sharp peak around 228 for the pure blend, which can be assigned to the π→π* transition. After being filled with NiO NPs, the nanocomposites produced displayed new peaks at 292 and 422 nm that steadily increased with increasing NiO NPs concentration. The optical energy gap (Eg) was computed, and it was discovered that when the NiO NPs content increased, the Eg decreased (from 4.88 to 4.06 eV). At room temperature and over a wide frequency range, between 10− 1 and 107 Hz, the samples’ impedance, AC conductivity, and dielectric qualities were examined. Increased NiO NPs content was seen to gradually enhance dielectric loss (up to 2255), and dielectric constant (up to 311). The AC conductivity of the filled samples is also enhanced and corresponds to Jonscher power law. By analysing impedance components of the Z*, the equivalent electrical circuit for each sample was determined. Because of the considerable improvement in optical and electrical properties, these composite films could compete for usage in optoelectronic applications.

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Section: Xrd and Tem Analysismentioning

confidence: 73%

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

Salim

Tarabiah

2023

J Inorg Organomet Polym

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“…In this work, the purpose of this work is geared towards observing Q-switched pulses generated by the MoSSe-based SA in the cavity and as such, the tunable filter was not included. However, it would be safe to postulate that as with other works [47][48][49], incorporating a tunable filter in this cavity will also provide wavelength tuning characteristics.…”

Section: Resultsmentioning

confidence: 98%

MoSSe-based passively modulated erbium doped fiber laser

Ahmad¹,

Ramli²,

Reduan³

et al. 2020

Laser Phys.

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A passively modulated erbium-doped fiber laser (EDFL) using a Molybdenum Sulfide Selenide (MoSSe)-based saturable absorber (SA) is proposed and demonstrated. The modulation depth and saturation intensity of the MoSSe sample are measured to be 25.7% and 0.003 MW cm −2 respectively. The output pulses are obtained at a central wavelength of 1559.5 nm, with a minimum pulse width of 1.3 µs and maximum pulse energy of 44.3 nJ as well as a maximum repetition rate of 92.6 kHz. This would be the first demonstration of a passively modulated EDFL using an MoSSe-based SA to the best knowledge of the authors.

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“…Compared to continuous-wave (CW) lasers, short-pulse lasers can remarkably improve some applications due to the much higher peak power with much lower average power lever. Passively Q-switching and mode-locking using saturable absorbers (SAs) are the main mechanisms to modulate the laser operation from CW into pulsed regime, and SAs play a vital role in such processes [1] [2] [3].…”

Section: Introductionmentioning

confidence: 99%

Passively Q-Switched Erbium-Doped Fiber Laser with TiSe<sub>2</sub> as Saturable Absorber

Hong¹,

Liu²,

Yang³

et al. 2020

OPJ

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Chitosan capped nickel oxide nanoparticles as a saturable absorber in a tunable passively Q-switched erbium doped fiber laser

Abstract: Nickel oxide (NiO) nanoparticles prepared from a nickel(ii) chloride hexahydrate precursor are used to form a chitosan capped NiO nanoparticle thin film that serves as a saturable absorber in a passively Q-switched erbium doped fiber laser.

Cited by 28 publications

References 74 publications

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

MoSSe-based passively modulated erbium doped fiber laser

Passively Q-Switched Erbium-Doped Fiber Laser with TiSe<sub>2</sub> as Saturable Absorber

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Chitosan capped nickel oxide nanoparticles as a saturable absorber in a tunable passively Q-switched erbium doped fiber laser

Abstract: Nickel oxide (NiO) nanoparticles prepared from a nickel(ii) chloride hexahydrate precursor are used to form a chitosan capped NiO nanoparticle thin film that serves as a saturable absorber in a passively Q-switched erbium doped fiber laser.

Cited by 28 publications

References 74 publications

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

The Influence of NiO Nanoparticles on Structural, Optical and Dielectric Properties of CMC/PVA/PEDOT:PSS Nanocomposites

MoSSe-based passively modulated erbium doped fiber laser

Passively Q-Switched Erbium-Doped Fiber Laser with TiSe&lt;sub&gt;2&lt;/sub&gt; as Saturable Absorber

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Passively Q-Switched Erbium-Doped Fiber Laser with TiSe<sub>2</sub> as Saturable Absorber