Dual-wavelength fiber mode-locked laser based on graphene saturable absorber

Sotor, Jarosław; Soboń, Grzegorz; Pasternak, Iwona; Krzempek, Karol; Dudzik, Grzegorz; Krajewska, Aleksandra; Strupiński, Włodek; Abramski, Krzysztof M.

doi:10.1117/12.2041041

Cited by 3 publications

(3 citation statements)

References 37 publications

(63 reference statements)

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“…Fiber lasers are favored over other types of lasers due to their durability, compactness, zero alignments, low cost, and ability to produce high output and peak power [1]. Recently, passively Q-switched optical fiber lasers have attracted much attention owing to their potential applications in several fields such as medicine, telecommunication, micro-machining, and fabrication [6,7]. Many methods and new materials are being explored for the fabrication of SAs for the Q-switching of erbium (Er 3+ ) doped fiber laser (EDFL).…”

Section: Introductionmentioning

confidence: 99%

The role of saturable absorbers thickness in the Q-switching of the erbium-doped fiber laser

Ajmal¹,

Bibi²,

Ahmed³

et al. 2023

Laser Phys. Lett.

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A passively Q-switched Erbium (Er3+) doped fiber laser (EDFL) based on a ZnO saturable absorber (SA) prepared using a pulsed laser deposition (PLD) technique is demonstrated. The in-situ monitoring of the thickness in the PLD system enabled the control of the SA’s thickness during the growth. The thickness of the SA was varied and the output characteristics of the fiber laser with all thicknesses are compared. This study reveals that the performance and efficiency of an EDFL including pulse repetition rates, pulse duration, pulse energy, peak power, stability, and signal-to-noise ratio can be improved by varying the thickness of the SA. Based on the thickness of the SA, the optimized results are also presented. These findings suggest that the thickness control of the SA film grown directly on the fiber ferrule facilitates much-improved EDFL that has potential applications in pulsed laser sources.

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Section: Introductionmentioning

confidence: 99%

The role of saturable absorbers thickness in the Q-switching of the erbium-doped fiber laser

Ajmal¹,

Bibi²,

Ahmed³

et al. 2023

Laser Phys. Lett.

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“…These materials are promising in the world of fiber laser. However some materials have drawbacks to it such as Semiconductor saturable absorber mirror (SESAM) has low damage threshold, limited operation wave band and narrow spectrum response as well as complex and expensive fabrication [12,13]. Meanwhile graphene has the absence of band gap, low absorption coefficient and weak optical absorption.…”

Section: Introductionmentioning

confidence: 99%

Zinc oxide nanoparticles based passive saturable absorber for pulse generation in fiber laser

et al. 2019

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A stable passive Q-switched pulsed generation in Erbium doped fiber laser by Zinc Oxide nanoparticles embedded in polyvinyl alcohol (ZnONP-PVA)-based saturable absorber is demonstrated in this paper. The surface morphology and thickness profile of the fabricated film were observed using FESEM and 3D measuring laser microscope with the measured thickness of 12 µm. Meanwhile the its optical properties is characterized using Raman spectroscopy. The developed ZnONP-PVA film, has modulation depth of 7.8% and intensity saturation of 88.97 MW/cm 2 . The threshold input pump power to generate Q-switched pulse is at 45.4 mW and can be tuned until 92.4 mW before the pulse diminished. The operating wavelength of generated pulse is at 1535 nm with 3 dB bandwidth approximately of 2 nm with exclusion of parasitic continuous wave lasing. As the input pump power was tuned from threshold to maximum value, the recorded pulse train of repetition rate is tunable from 73.53 kHz to 103.10 kHz while the pulse width decreases from 6.8 µs to 4.8 µs. The calculated maximum output power and pulse energy at maximum input pump power was 5.14 mW and 49.85 nJ, respectively. The measured signal to noise ratio was 56 dB indicated that the generated pulse by ZnO NP based passive saturable absorber was stable.

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“…It also has a narrow operation waveband and limited range of optical responses. This * E-mail: fauzan.kl@utm.my resulted in restricted pulse generation [4][5]. SWNTsbased SAs though deemed to be simple and inexpensive fabrication-wise, have higher surface energy causing them to be less stable, lower damage threshold and lack reliability as well.…”

mentioning

confidence: 99%

Dual-wavelength passively Q-switched Erbium-doped fiber laser with MWCNTs slurry as saturable absorber

Zuikafly

Ahmad

Ibrahim

et al. 2016

Photon. Lett. Poland

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Abstract-In this work, a compact, stable dual-wavelength Qswitched laser has been demonstrated, with a multi-walled carbon nanotubes (MWCNTs) slurry as a saturable absorber (SA) which is independent of any host polymer. The MWCNTs slurry is fabricated and the peak shift is investigated using Raman spectroscopy.The passively Q-switched erbium-doped fiber laser (EDFL) oscillated simultaneously at 1532.32nm and 1556.97nm with 24.67nm peak separation, at threshold and maximum input power of 26mW and 74mW, respectively. By increasing the input pump power from 36mW to 74mW, the pulse train repetition rate increases from 25kHz to 78kHz, while the pulse width is reduced from 17.84s to 5.24μs. The generated pulse produced maximum pulse energy and maximum peak power of 11.97nJ and 2.05mW, respectively at maximum input pump power. The recorded signal to noise ratio is about 62dB and shows that the proposed MWCNTs slurry based SA is able to generate dual wavelength Qswitched pulse laser with a high stability pulse.The generation of high energy laser pulses often utilizes Q-switching fiber lasers technology that brings about various applications in many industrial and scientific sectors including laser processing, medicine, telecommunications, range finding, metal cutting and remote sensing [1][2]. Actively Q-switched fiber lasers use optical modulation devices which made them more complicated as compared to the passively Q-switching techniques. The simplicity, compactness and flexibility [3] that Q-switched fiber lasers offer, have made them preferable in laser pulse generation. A passively Qswitched fiber laser has employed different kinds of saturable absorber as a means to find the one that would best complement the characteristics of lasers.Semiconductor saturable absorber mirrors (SESAMs), single-walled carbon nanotubes (SWNTs) as well as graphene have been widely investigated in passively Qswitched EDFL. Though it is thought that the said SA is ideal with an all-fiber cavity configuration, many researches have been continuously conducted to find a better if not the best SA to surmount the drawbacks of the previous SAs. SESAMs fabrication is complex, intricate and expensive [2][3]. It also has a narrow operation waveband and limited range of optical responses. This * E-mail: fauzan.kl@utm.my resulted in restricted pulse generation [4][5]. SWNTsbased SAs though deemed to be simple and inexpensive fabrication-wise, have higher surface energy causing them to be less stable, lower damage threshold and lack reliability as well. Having a much lower saturation intensity and a higher damage threshold as compared to SWNTs, graphene is seen as a better SA as it can allow better saturable absorption as well as ultrafast recovery time [6]. However, graphene has relatively weak optical absorptions. Therefore, based on the drawbacks in the properties of the previous SAs, this research will demonstrate a compact and stable dual-wavelength Qswitched laser with MWCNTs slurries as a saturable absorber. As a family type of carbon nanotu...

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Dual-wavelength fiber mode-locked laser based on graphene saturable absorber

Cited by 3 publications

References 37 publications

The role of saturable absorbers thickness in the Q-switching of the erbium-doped fiber laser

The role of saturable absorbers thickness in the Q-switching of the erbium-doped fiber laser

Zinc oxide nanoparticles based passive saturable absorber for pulse generation in fiber laser

Dual-wavelength passively Q-switched Erbium-doped fiber laser with MWCNTs slurry as saturable absorber

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