Magnesium oxide (MgO) thin film as saturable absorber for passively mode locked erbium-doped fiber laser

Khaleel, Wurood Abdulkhaleq; Sadeq, Sinan Abdulhameed; Al-Ani, Ibrahim; Ahmed, M.H.M.

doi:10.1016/j.optlastec.2019.02.042

Cited by 54 publications

(23 citation statements)

References 58 publications

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“…As for the performance of the mode-locked pulses, the result of the current work showed that the generated center wavelength, 1559 nm, was comparable with that from other studies in the C-band region with the wavelength output of our result was slightly lower than that reported in ref. 51 , 73 , 74 , 75 , 76 and 77 but longer than those reported in ref. 78 , 79 and 80 .…”

Section: Resultsmentioning

confidence: 52%

“…The SNR generated in this work was 67.7 dB. It is the highest SNR value compared to Mo 2 C, 73 graphite, 51 MoS 2 , 74 MoTe 2 , 75 PdS 2 , 76 MoSe 2 , 78 MgO, 77 Mxene (Ti 3 C 2 T x ) 79 and SnSe 2 , 80 which clearly indicate that this system is very stable. The pulse width generated using CdTe deposited on D-shaped fiber in this work was 0.77 ps, which was shorter compared to most of those reported in the selected literature studies presented in Table 1 .…”

Section: Resultsmentioning

confidence: 54%

“…Further demonstration of intracavity dispersion management generating shorter pulse width was observed using, MoTe 2 , 75 MgO (ref. 77) and SnSe 2 . 80 The net cavity dispersion of this work is comparatively similar to that of PdS 2 , 76 MoSe 2 78 and Mxene (Ti 3 C 2 T x ), 79 with the values of À0.23 ps 2 against À0.21 ps 2 , À0.22 ps 2 and À0.14 ps 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

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Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region

et al. 2022

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Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

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Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region

et al. 2022

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“…42 , 43 The characteristic bands at wavenumber 3600–3400, 1639, ~600–800 cm −1 were assigned to functional groups of MgO structure. 44 The stretching vibration mode ~600–800 cm – 1 indicated Mg-O-Mg bonds. 45 Some peaks of nystatin, MgO and CuO overlap somewhat with one another and with the intense peak of sodium alginate.…”

Section: Resultsmentioning

confidence: 99%

Bursting the Virulence Traits of MDR Strain of Candida albicans Using Sodium Alginate-based Microspheres Containing Nystatin-loaded MgO/CuO Nanocomposites

Abid¹,

Uzair²,

Niazi³

et al. 2021

IJN

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Introduction Candida albicans is a major opportunistic pathogen that causes a wide range of human infections. Currently available therapeutic agents are limited for treating these fungal infections due to multidrug resistance as well as their nonbiodegradability, poor biocompatibility and toxicity. In order to battle these limitations, we have synthesized a polymeric system as microcarriers to deliver the antifungal drug. The objective of the present study was to immobilize MgO/CuO nanocomposite and nystatin-loaded MgO/CuO nanocomposites in nontoxic, nonimmunogenic, biodegradable and biocompatible sodium alginate microspheres for the first time. Materials and Methods Nanoparticle-loaded sodium alginate microspheres were prepared by ionotropic gelation technique using calcium chloride as a cross-linker. Synthesized microspheres were characterized using standard characterization techniques and were evaluated for biological activity against MDR strain of C. albicans . Results Characterization of microspheres by Fourier-transform infrared spectroscopy confirmed loading of Nys-MgO/CuO NPs, scanning electron microscopy (SEM) revealed rough spherical beads with a highly porous surface having an average size in the range of 8–10 µm. X-ray diffraction (XRD) analyzed its semicrystalline structure. Entrapment efficiency of Nys-MgO/CuO NPs was 80% and release kinetic study revealed sustained and prolonged release of drug in pH 5.5. Flow cytometry analysis showed yeast cell death caused by Nys-MgO/CuO MS exhibits late apoptotic features. In cytotoxicity assay 5–14 mg of microspheres did not cause hemolysis. Microspheres reduced virulence traits of C. albicans such as germ tube and biofilm formation were compromised at concentration of 5 mg/mL. Antimicrobial assessment results revealed a pronounced inhibitory effect against C. albicans . Conclusion The in vitro experiments have shown promising results based on good stability, Nys-MgO/CuO NP-encapsulated microspheres can be used as a prolonged controlled release system against MDR pathogenic C. albicans .

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“…In 2019, Khaleel et al applied MgO-PVA thin film as SAs in laser cavity, where a mode-locked EDFL with 5.6-ps pulse width and 50-dB SNR was demonstrated. [247] Song et al used PbO nanosheets as SAs that were integrated by sandwiching between two connectors of fiber or decorating on a microfiber. [248] It was observed that mode-locked pulses centered at 1-and 1.5-μm bands were both generated, respectively.…”

Section: Other Metal Oxidesmentioning

confidence: 99%

Recent Progress on Metal‐Based Nanomaterials: Fabrications, Optical Properties, and Applications in Ultrafast Photonics

Sun

Cheng

et al. 2021

Adv Funct Materials

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Nanomaterials have demonstrated excellent mechanical, thermal, optical, and electrical properties in various fields, including 1D carbon nanotubes, as well as 2D materials starting from graphene. Metal-based nanomaterials, mainly divided into metal and metal oxide nanoparticles, also gradually come into the sight of ultrafast photonics applications due to the outstanding optical properties. The optical properties of metal nanoparticles can be enhanced by the interaction between conduction electrons with electric fields that is called surface plasmon resonance. As for metal oxide nanoparticles, optical properties are closely related to bandgap structures. When it comes to transition metal oxides, other phenomena also play important roles in optical absorption such as spin inversion and excitons of iron. Moreover, preparation methods of materials are also crucial for their properties and further applications. Therefore, in this review, commonly used physical and chemical fabrication methods for metal-based nanomaterials are first introduced. Then the optical properties of typical metal and metal oxide nanoparticles are discussed specifically. In addition, the applications of metal-based nanomaterials in ultrafast lasers based on mode-locked and Q-switched techniques are also summarized. Finally, a summary and outlook toward the synthesis, optical properties, and applications in ultrafast photonics of metal-based nanomaterials are presented.

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Magnesium oxide (MgO) thin film as saturable absorber for passively mode locked erbium-doped fiber laser

Cited by 54 publications

References 58 publications

Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region

Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region

Bursting the Virulence Traits of MDR Strain of Candida albicans Using Sodium Alginate-based Microspheres Containing Nystatin-loaded MgO/CuO Nanocomposites

Recent Progress on Metal‐Based Nanomaterials: Fabrications, Optical Properties, and Applications in Ultrafast Photonics

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