Aluminum oxide nanoparticles as saturable absorber for C-band passively Q-switched fiber laser

Al-Hayali, Sarah Kadhim; Mohammed, Dunya Zeki; Khaleel, Wurood Abdulkhaleq; Al‐Janabi, Abdulhadi

doi:10.1364/ao.56.004720

Cited by 77 publications

(18 citation statements)

References 35 publications

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“…Generally, the graphene has great ability to produce high nonlinear absorption and the highest modulation depth. However, it still has certain limitations related to its weak absorption coefficient and its low damage threshold [62,63]. The CNTs also have low damage threshold, and their operating wavelength depends on their diameters [62].…”

Section: Discussionmentioning

confidence: 99%

Characterizations of Nanodiamond Composite Film for Photonics Applications

Shakaty¹,

Hmood²,

Mahdi³

2022

JASN

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Due to its flexibility, small size and low cost, the nanomaterials films are widely desired in optical applications. In this study, a solid nanodiamond (ND) film was fabricated and characterized for photonics applications. The nanocomposite films were prepared by drop casting method where ND was embedded into poly Vinylidene fluoride-trifluoroethylene (PVDF-TrFE) as a host polymer. Both physical and optical properties of the prepared film were investigated. To analyze the structure of fabricated ND-PVDF-TrFE film, various measurement methods were adopted, including a field emission scanning electron microscopy (FESEM), Fourier transform spectroscopy (FTIR), and x-ray diffraction. The nonlinear absorption property of ND-PVDF-TrFE film was studied by balanced twin detector technique (BTDT) using mode-locked fiber laser with pulse width of 1.4 ps at wavelength of 1566 nm. The results showed that the saturable-absorption features of ND-PVDF-TrFE film possess a good nonlinear performance. Furthermore, a good nonlinearity with a high modulation depth makes the ND-PVDF-TrFE film a good candidate to use in many photonics systems such as saturable absorber (SA) in passive Q-switched or mode-locked fiber lasers.

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Section: Discussionmentioning

confidence: 99%

Characterizations of Nanodiamond Composite Film for Photonics Applications

Shakaty¹,

Hmood²,

Mahdi³

2022

JASN

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“…Hence, SA is a key component for achieving ultra-short pulse operation from fiber lasers. A variety of SAs, such as carbon nanotube 4 , 5 , graphene 6 , Oxide films based SAs 7 , 8 , semiconductor saturable-absorber mirrors (SESAMs) 9 , 10 , and topological insulators 11 , 12 have been implemented in fiber lasers and cavities for the passive mode-locked pulse generation. Among oxide films, ZnO material is considered a viable material due to its electrical and optical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Ameliorating the stability of erbium-doped fiber laser using saturable absorber fabricated by the pulsed laser deposition technique

Asghar

Ahmed

Ajmal

et al. 2022

Sci Rep

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In this paper, we present the performance and stability of an erbium-doped fiber laser (EDFL) based on ZnO saturable-absorber (SA) prepared using two schemes: solution method (SM) and pulsed laser deposition technique (PLDT). It was observed that EDFL with ZnO-SA prepared using SM emits at 1561.25 nm under a pump power of 230 mW. As the pump power is increased from 22.2 mW to 75.3 mW, the pulse duration decreases from 24.91 to 10.69 µs, and the pulse repetition rates increase from 11.59 to 40.91 kHz. Besides at pump power of 75.3 mW, the peak power, pulse energy, and average output power are measured as 0.327 mW, 2.86 nJ, and 0.18 mW, respectively. However, when PLDT-based SA was incorporated into the ring cavity, the emission wavelength is noticed at 1568.21 nm at a pump power of 230 mW. With the increase in pump power from 22.2 mW to 418 mW, the pulse repetition rates increase from 10.79 to 79.37 kHz and the pulse width decreases from 23.58 to 5.6 µs. Furthermore, the peak power, pulse energy, and average output power are observed to be 10.9 mW, 74 nJ, and 5.35 mW, respectively. The stability of EDFL based on SAs prepared using SM and PLDT has also been investigated. To the best of the author's knowledge, it is the first comparison of performance and long-term stability of EDFL based on two experimental techniques SM and PLDT-based SAs. These findings suggest that PLDT-based SAs provides optimum stability over a long period and enhanced the performance of fiber lasers compared to the SAs prepared using the conventional SM technique. This study paves the way for the development of ultra-stable SAs for their potential applications in pulsed laser sources and photonic devices.

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“…CdS quantum dots as SA have been used in an Er-doped fiber laser to generate Q-switched pulses [10]. Besides ZnO, the use of oxide semiconductors such as TiO 2 , Al 2 O 3 , NiO, and Fe 3 O 4 NPs as optical modulators has also been demonstrated in previous reports [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Mo:BiVO4 Nanoparticles-Based Optical Modulator and Its Application in a 2-μm Pulsed Laser

et al. 2021

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Mo:BiVO4 nanoparticles were employed as an optical modulator in a Q-switched all-solid-state Tm:YAP laser for the first time. The nonlinear optical parameters of Mo:BiVO4 nanoparticles in the 2-μm region were characterized by measuring nonlinear transmission. Saturation intensity was 718 MW/cm2, and the modulation depth was 12.3%. A stable pulse sequence was acquired with a 70.08 kHz maximum repetition rate and an 821 ns pulse width. The maximum output average power was 153 mW, corresponding to 2.18 μJ single pulse energy and 2.67 W peak power. Although the response wavelength of Mo:BiVO4 is in visible light region, our experimental results demonstrates that a saturable absorption effect for wavelengths much longer than visible light (2 μm wavelength) is still possible due to sub-bandgap absorption. Therefore, we experimentally proved that Mo:BiVO4 nanoparticles are a great candidate for use as an optical modulator of a 2-μm pulsed laser.

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Aluminum oxide nanoparticles as saturable absorber for C-band passively Q-switched fiber laser

Cited by 77 publications

References 35 publications

Characterizations of Nanodiamond Composite Film for Photonics Applications

Characterizations of Nanodiamond Composite Film for Photonics Applications

Ameliorating the stability of erbium-doped fiber laser using saturable absorber fabricated by the pulsed laser deposition technique

Mo:BiVO4 Nanoparticles-Based Optical Modulator and Its Application in a 2-μm Pulsed Laser

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