Q-switched erbium-doped fiber laser with silicon oxycarbide saturable absorber

Nizamani, Bilal; Memon, Faisal Ahmed; Umar, Zeshan Adeel; Salam, Sameer; Najm, Mustafa Mohammed; Khudus, Muhammad Imran Mustafa Abdul; Hanafi, Effariza; Baig, M. A.; Harun, Sulaiman Wadi

doi:10.1016/j.ijleo.2020.165234

Cited by 9 publications

(6 citation statements)

References 25 publications

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“…Our results are comparable to recent year studies which use PVA as a host polymer [29,37]. Table 1 sums up the comparison of Q-switched operation including zinc oxide SA and our previous work based on silicon oxycarbide as a SA [30,37,38]. The comparison to previous studies show that a higher average output power of 4.1 mW is achieved, contributing to the optimized EDFL configuration.…”

Section: Resultssupporting

confidence: 85%

Aluminium zinc oxide as a saturable absorber for passively Q-switched and mode-locked erbium-doped fiber laser

Nizamani¹,

Jafry²,

Salam³

et al. 2021

Laser Phys.

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Transparent conductive oxides (TCOs) are widely integrated in the field of optoelectronics since they are optically transparent and electrically conductive at the same time. Indium tin oxide (ITO) is a well-developed TCO, but due to its high cost, aluminum zinc oxide (AZO) is now emerging as a promising low-cost replacement for ITO. This work reports on AZO thin film prepared with polyvinyl alcohol (PVA) as a host material. The AZO–PVA thin film was incorporated into an erbium-doped fiber laser (EDFL) as a saturable absorber for the first time. Both Q-switched and nanosecond pulse mode-locked operation were experimentally achieved. The Q-switched EDFL operated at the center wavelength of 1559.6 nm, which had the shortest pulse width of 2.2 µs, the maximum repetition rate of 86 kHz and the highest pulse energy of 47.3 nJ. The mode-locked was achieved at the center wavelength of 1560.4 nm.

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Section: Resultssupporting

confidence: 85%

Aluminium zinc oxide as a saturable absorber for passively Q-switched and mode-locked erbium-doped fiber laser

Nizamani¹,

Jafry²,

Salam³

et al. 2021

Laser Phys.

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“…As no Q-switching mechanism has been reported based on Al 2 H 2 O 6 Si, various other SAs based on Si, Al, and SiO have been used for a comparative study. The measured results demonstrate that the pulse duration of the EDFL subject to BNC-SA is comparable to previously reported SAs [31][32][33][34][35]. However, the repetition rates (103.6 kHz) and average output power (4.6 mW) are higher than other SAs, which indicates the efficacy of bentonite clay in acting as an SA for the generation of pulse operation.…”

Section: Resultssupporting

confidence: 81%

“…Micromachines 2024, 15, x 7 of 10 system was well established throughout the experiment, which confirms that BNC-SA is suitable for stable as well as long-term laser operation in ambient conditions. Finally, a comparison of EDFL performance based on Al 2 H 2 O 6 Si with other reported SAs materials such as SiOC [31], Al 2 O 3 [32], Al [33], Si [34], and aluminum zinc oxide [35] is presented in Table 1. As no Q-switching mechanism has been reported based on Al 2 H 2 O 6 Si, various other SAs based on Si, Al, and SiO have been used for a comparative study.…”

Section: Resultsmentioning

confidence: 99%

Passively Q-Switched Er-Doped Fiber Laser Based on Bentonite Clay (Al2H2O6Si) Saturable Absorber

Asghar,

Khalid,

Sohail

et al. 2024

Micromachines

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This paper presents the investigations toward the direct use of bentonite clay (Al2H2O6Si) nanoparticles to act like a saturable absorber (SA) for the Q-switched pulse operation of an erbium-doped fiber laser (EDFL). The measured results reveal that with the incorporation of bentonite clay nanopowder as a SA, an EDFL is realized with a Q-switching mechanism starting at a pump power of 30.8 mW, and a Q-switched emission wavelength was noticed at 1562.94 nm at 142 mW pump power. With an increased pump from 30.8 mW to 278.96 mW, the temporal pulse parameters including minimum pulse duration and maximum pulse repetition rates were reported as 2.6 µs and 103.6 kHz, respectively. The highest peak power, signal-to-noise ratio, output power and pulse energy were noticed to be 16.56 mW, 51 dB, 4.6 mW, and 47 nJ, respectively, at a highest pump power of 278.96 mW. This study highlights the significance of bentonite clay (Al2H2O6Si) nanoparticles as a potential candidate for a saturable absorber for achieving nonlinear photonics applications.

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“…The short pulse generation is extensively reported at C-band [22][23][24][25], but the reports on S-band modelocked lasers are very limited [26]. Mode-locked pulses are a specific type of laser output where a train of ultrashort pulses is generated at a very high repetition rate.…”

Section: Introductionmentioning

confidence: 99%

Generation of mode-locked thulium doped fluoride fiber laser using graphene-zinc oxide (G-ZnO) coated dual arc-shaped fiber

Ahmad,

Nizamani,

Seiger

2023

Phys. Scr.

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In this work, mode-locked laser generation at the S-band region was achieved using a graphene-zinc oxide (G-ZnO) coated dual arc-shaped fiber as a saturable absorber (SA) within a thulium-doped fluoride fiber (TDFF) ring cavity. Two-step polishing was implemented to fabricate a dual arc-shaped fiber, and a G-ZnO solution was then deposited on the dual arc region via the drop-casting method to form the SA. Mode-locked pulses were generated by incorporating the G-ZnO-based SA into the TDFF ring cavity, with the pulses having a central wavelength, 3 dB bandwidth and pulse duration of 1503.4 nm, 0.68 nm and 3.52 ps, respectively. At the maximum pump power of 202 mW, an average output power of 2.47 mW was obtained with a maximum pulse energy of 6.16 nJ and a peak power of 1.75 kW. At this pump power, the generated pulses have a frequency of 401.6 kHz with a signal-to-noise ratio (SNR) of 54 dB. The mode-locking threshold was at a pump power of 118 mW. The results obtained in this work indicate the potential of a new class of 2D composite materials which can be used as nonlinear optical devices.

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Q-switched erbium-doped fiber laser with silicon oxycarbide saturable absorber

Cited by 9 publications

References 25 publications

Aluminium zinc oxide as a saturable absorber for passively Q-switched and mode-locked erbium-doped fiber laser

Aluminium zinc oxide as a saturable absorber for passively Q-switched and mode-locked erbium-doped fiber laser

Passively Q-Switched Er-Doped Fiber Laser Based on Bentonite Clay (Al2H2O6Si) Saturable Absorber

Generation of mode-locked thulium doped fluoride fiber laser using graphene-zinc oxide (G-ZnO) coated dual arc-shaped fiber

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