Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity

Muhammad, Ahmad Razif; Zakaria, Rozalina; Ahmad, Mushtaq; Wang, P.; Harun, Sulaiman Wadi

doi:10.1016/j.yofte.2019.02.010

Cited by 23 publications

(9 citation statements)

References 35 publications

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“…One of these is thermal evaporation, whereby Au is deposited onto a PVA film that was previously formed. [89] Here, a current of 10 kA passed through an Au coil under vacuum, allowing Au to evaporate and condense onto the PVA film. The same approach was used for depositing CuNPs.…”

Section: Physical Methodsmentioning

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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Section: Physical Methodsmentioning

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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“…It has finally been shown that gold absorption can be saturated under intense optical pumping 30 , which can be helpful for achieving pulsed regimes in laser architectures 31,32 . Indeed, to generate stable ultrashort pulses through mode locking, the laser cavity requires the action of a saturable absorber with an ultrafast relaxation time, a significant contrast in the nonlinear transfer function, and a high damage threshold [33][34][35] . Several saturable absorber 2D materials have been developed during the past two decades, aiming to achieve convenient integration in fiber laser and waveguide laser platforms.…”

Section: Introductionmentioning

confidence: 99%

Saturable plasmonic metasurfaces for laser mode locking

et al. 2020

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Metamaterials are artificial materials made of subwavelength elementary cells that give rise to unexpected wave properties that do not exist naturally. However, these properties are generally achieved due to 3D patterning, which is hardly feasible at short wavelengths in the visible and near-infrared regions targeted by most photonic applications. To overcome this limitation, metasurfaces, which are the 2D counterparts of metamaterials, have emerged as promising platforms that are compatible with planar nanotechnologies and thus mass production, which platforms the properties of a metamaterial into a 2D sheet. In the linear regime, wavefront manipulation for lensing, holography, and polarization control has been achieved recently. Interest in metasurfaces operating in the nonlinear regime has also increased due to the ability of metasurfaces to efficiently convert incident light into harmonic frequencies with unusual polarization properties. However, to date, the nonlinear absorption of metasurfaces has been mostly ignored. Here, we demonstrate that plasmonic metasurfaces behave as saturable absorbers with modulation performances superior to the modulation performance of other 2D materials and exhibit unusual polarimetric nonlinear transfer functions. We quantify the link between saturable absorption, the plasmonic resonances of the unit cell and their distribution in a 2D metasurface, and finally provide a practical implementation by integrating the metasurfaces into a fiber laser cavity operating in pulsed regimes driven by the metasurface properties. As such, this work provides new perspectives on ultrathin nonlinear saturable absorbers for applications where tunable nonlinear transfer functions are needed, such as in ultrafast lasers or neuromorphic circuits.

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“…At first, saturable absorbing mirrors on semiconductor (SESAMs) were discovered as a promising SAs which could achieve stable mode locked and Q switched pulses [5]. Owing to the mirror alignment issues in SESAMs, many other potential materials emerged as new SAs which included graphene, black phosphorus, transition metal dichalcogenides (TMDs), topology insulators (TIs), organic materials, metals, metal carbides and metal oxides [6][7][8][9][10][11][12][13]. All these SAs could achieve stable mode locked and Q switched lasers.…”

Section: Introductionmentioning

confidence: 99%

Q-switched EDF LASER Cavity using ITO as Saturable Absorber

Nizmani

Memon

Chowdhary

et al. 2021

SSURJET

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In this work, we have experimentally reported Q-switched pulse generation by indium tin oxide as a saturable absorber. First the glass slide was placed in electron beam deposition chamber and indium tin oxide layer was coated over the glass slide. Then the indium tin oxide was exfoliated from the glass slide, over the fiber ferrules in erbium doped fiber laser cavity. The Q-switched laser operated at center wavelength of 1562.6 nm. The repetition rate and pulse width were obtained to be 48.31-64.52 kHz and 5.65-4.23 µs, respectively.

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Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity

Cited by 23 publications

References 35 publications

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

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

Saturable plasmonic metasurfaces for laser mode locking

Q-switched EDF LASER Cavity using ITO as Saturable Absorber

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Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity

Cited by 23 publications

References 35 publications

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

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

Saturable plasmonic metasurfaces for laser mode locking

Q-switched EDF LASER Cavity using ITO as Saturable Absorber

Contact Info

Product

Resources

About

Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity