Q‐switching and mode‐locking pulse generation with graphene oxide paper‐based saturable absorber

Harun, Sulaiman Wadi; Sabran, Muhamad Burhan Shah; Azooz, Salam M.; Zulkifli, Ahmad Zarif; Ismail, Mohamed A.; Ahmad, Harith

doi:10.1049/joe.2014.0321

Cited by 4 publications

(6 citation statements)

References 30 publications

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“…52a. Meanwhile, from the Q-switched pulse profile under the incident pump power of 10 W, the minimum pulse width of 104 ns was obtained [360], as shown in Fig. 52b.…”

Section: Q-switchingmentioning

confidence: 94%

“…At a pump power of 6.27 W, the average power of 302 mW and the corresponding pulse energy of 6.71 μJ were achieved with a slope efficiency of ~21.8% and a pulse width of ~3.8 μs. Besides, for the Q-switched erbium-doped fiber lasers using GO paper as a saturable absorber, a pump threshold of 22 mW was obtained, at which a stable and self-starting Q-switched operation began to be observed [360]. However, when the pump power exceeds 50.5 mW, the Q-switching pulse disappears, indicating a damage threshold.…”

Section: Q-switchingmentioning

confidence: 95%

“…In addition to the GO-based Q-switched fiber lasers operated at a single wavelength, such as 1.06 μm [359,363], 1.5μm [360,364] and 2 μm [362], dual-wavelength and multi-wavelength Qswitched lasers were also reported. For example, Song et al [365] reported a passively Q-switched dual-wavelength Nd:GYSGG laser operating at 1057.28 and 1060.65 nm with GO as the saturable absorber, as shown in Fig.…”

Section: Q-switchingmentioning

confidence: 99%

“…Inset shows the RF spectrum of the Q-switched laser at the pump power of 50.5 mW. Reproduced from Ref [360]…”

mentioning

confidence: 99%

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Physical properties and device applications of graphene oxide

2020

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Graphene oxide (GO), the functionalized graphene with oxygenated groups (mainly epoxy and hydroxyl), has attracted resurgent interests in the past decade owing to its large surface area, superior physical and chemical properties, and easy composition with other materials via surface functional groups. Usually, GO is used as an important raw material for mass production of graphene via reduction. However, under different conditions, the coverage, types, and arrangements of oxygencontaining groups in GO can be varied, which give rise to excellent and controllable physical properties, such as tunable electronic and mechanical properties depending closely on oxidation degree, suppressed thermal conductivity, optical transparency and fluorescence, and nonlinear optical properties. Based on these outstanding properties, many electronic, optical, optoelectronic, and thermoelectric devices with high performance can be achieved on the basis of GO. Here we present a comprehensive review on recent progress of GO, focusing on the atomic structures, fundamental physical properties, and related device applications, including transparent and flexible conductors, field-effect transistors, electrical and optical sensors, fluorescence quenchers, optical limiters and absorbers, surface enhanced Raman scattering detectors, solar cells, light-emitting diodes, and thermal rectifiers.

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“…52a. Meanwhile, from the Q-switched pulse profile under the incident pump power of 10 W, the minimum pulse width of 104 ns was obtained [360], as shown in Fig. 52b.…”

Section: Q-switchingmentioning

confidence: 94%

Section: Q-switchingmentioning

confidence: 95%

Section: Q-switchingmentioning

confidence: 99%

“…Inset shows the RF spectrum of the Q-switched laser at the pump power of 50.5 mW. Reproduced from Ref [360]…”

mentioning

confidence: 99%

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Physical properties and device applications of graphene oxide

2020

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“…Two-dimensional (2D) saturable absorbers (SA) have substantial performance and reliability characteristics that make them highly desired for use in ultrafast fiber laser light sources [1][2][3][4][5][6], with applications ranging from telecommunications [7], material processing [8], range finding [9] and biomedical imaging [10]. Many 2D materials have already been successfully demonstrated as SAs, from carbon based materials such as graphene and its derivatives to topological insulators [11][12][13][14] and transition metal dichalcogenides [15][16][17] as well as more exotic materials such as black phosphorus [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Acrylate polymer coated side-polished fiber with graphene oxide nanoparticles for ultrafast fiber laser operation

2018

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In this work, a mode-locked fiber laser with a side-polished fiber coated with graphene oxide nanoparticles as a saturable absorber (SA) is proposed and demonstrated. The SA is further coated with an acrylate polymer layer to add strength and durability, thus enabling real-world applications to be realized. The coated SA is capable of generated a pulsed output with a pulse width, pulse energy and pulse peak power of 1.09 ps, 0.013 nJ and 0.012 kW respectively. The cavity has a threshold power of 131.7 mW, and the output signals have a constant signalto-noise ratio of about 33 dB over a test period of 1 h, indicating a highly stable output. The protective polymer coating allows a simple way to manufacture a rugged device with no penalty to performance.

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Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode–multimode–singlemode fiber structure

et al. 2016

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A Q-switched dual-wavelength fiber laser using a graphene oxide-based saturable absorber to generate the desired output pulses is proposed and demonstrated. The system utilizes a singlemode–multimode–singlemode fiber structure to control the net losses in the cavity so that only two dominant wavelengths are allowed to oscillate. The proposed system is capable of generating an output with a high repetition rate of 27.1 kHz and a narrow pulse width of 4.03 µs. The output pulses also have average output power and pulse energy of up to 0.5 mW and 18.5 nJ, respectively. The 1st harmonic obtained has a high signal-to-noise ratio of 33.2 dB, indicating a highly stable pulse output with minimum mode hopping.

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Q‐switching and mode‐locking pulse generation with graphene oxide paper‐based saturable absorber

Cited by 4 publications

References 30 publications

Physical properties and device applications of graphene oxide

Physical properties and device applications of graphene oxide

Acrylate polymer coated side-polished fiber with graphene oxide nanoparticles for ultrafast fiber laser operation

Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode–multimode–singlemode fiber structure

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