Dual-wavelength passively Q-switched Erbium Ytterbium codoped fiber laser based on a nonlinear polarization rotation technique

Sabran, Muhamad Burhan Shah; Jusoh, Zuraini; Babar, I M; Ahmad, Harith; Harun, Sulaiman Wadi

doi:10.1002/mop.28895

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…Different experimental setups of DWFL by passive Q-switching technique have been reported [39][40][41]. However, to our knowledge, there have not been reported approaches using EYDCF as a gain medium.…”

Section: Q-switched Fiber Lasers: a Review From Operating Principle Tmentioning

confidence: 99%

Active Q-switched Fiber Lasers with Single and Dualwavelength Operation

Álvarez-Tamayo¹,

Durán-Sánchez²,

Pottiez³

et al. 2016

Fiber Laser

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A brief explanation on Q-switched fiber laser operating principle for active technique in terms of operation characteristics is presented. Experimental analysis of proposed pulsed fiber lasers by the active Q-switched technique is demonstrated. Experimental setups include the use of Er/Yb doped fiber as a gain medium and an acousto-optic modulator as cavity elements. Setup variations include the use of fiber Bragg gratings for wavelength selection and tuning and Sagnac interferometer for wavelength selection in single wavelength operation and for cavity loss adjustment in dual wavelength operation. The experimental analysis of principal characteristics of single-wavelength operation of the fiber laser and cavity loss adjustment method for dual-wavelength laser operation are discussed.

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Section: Q-switched Fiber Lasers: a Review From Operating Principle Tmentioning

confidence: 99%

Active Q-switched Fiber Lasers with Single and Dualwavelength Operation

Álvarez-Tamayo¹,

Durán-Sánchez²,

Pottiez³

et al. 2016

Fiber Laser

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“…However, the applications of active approaches are limited because it needs a sizable and costly external modulator to induce and restore a high Q-factor to generate pulses [7]. Saturable absorber (SA) material [8][9][10][11], semiconductor saturable absorber mirror (SESAM) [12][13][14], and nonlinear polarization rotation (NPR) [15,16] are passive components that passive techniques merely add to the ring cavity to generate pulses in the laser cavity. SESAM is the most often used SA in solid-state lasers for producing passive Q-switched fiber lasers by adjusting factors like recovery time, saturation energy, and absorption.…”

Section: Introductionmentioning

confidence: 99%

Influence of thickness on tunability performance of plasma sputtered indium tin oxide as Q-switcher

Zalkepali¹,

Mahmud²,

Awang³

et al. 2023

Laser Phys.

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We successfully investigated the influence of thickness on the tunability performance of plasma-sputtered indium tin oxide (ITO) as a Q-switcher. ITO is coated using direct current magnetron sputtering techniques with sputtering times of 150 s, 250 s, and 350 s to generate excellent quality ITO. Filmetrics measures the thickness, yielding 17.80 nm, 30.70 nm, and 38.90 nm, respectively. A stable Q-switched pulse is achieved at an operating wavelength and peak power of 1562.30 nm and −6.47 dBm for the thickness of 17.80 nm, 1561.40 nm and −3.19 dBm for the thickness of 30.70 nm, and 1560.2 nm and −2.44 dBm for the thickness of 38.90 nm. The thickness of 38.90 nm exhibit a high repetition rate of 43.60 kHz and narrow pulse width of 4.83 µs compared to other thickness. Employing the tunable bandpass filter in the laser ring cavity gives the wide-tuning of the wavelength range of 19.69 nm, 31.86 nm, and 36.59 nm for the thickness of 17.80 nm, 30.70 nm, and 38.90 nm, respectively. The tunability of Q-switched with the thicknesses of 30.70 nm and 38.90 nm is realized in the region of C-band to L-band. Regarding the authors’ expertise, this seems to be the first proposed influence of thickness on the tunability of plasma sputtered ITO that serves as saturable absorber in a Q-switched pulse.

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“…In present days, the optics community finds an ample research interest for the generation of high repetition rate (RR) subpicosecond optical pulses due to their large applications in the domain of optical signal processing [1,2], though the formation of this type of pulse train is very much challenging technically. Till date, several techniques like mode-locked lasers [3,4], Q-switching method [5] have been utilised for the generation of low RR optical pulses, which have uses in bio-medical diagnostics [6,7]. Moreover, the reason behind the growing * Authors to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Generation of stable temporal doublet by a single-mode silicon core optical fiber

Ghosh

Basu

2022

J. Opt.

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A highly nonlinear single-mode anomalous dispersion silicon-core fiber (SMADSF) is designed and optimized at the operating wavelength of 2.2 µm for the purpose of generating stable temporal pulse doublets. To designate the output pulse pair as a perfect Gaussian doublet, two new parameters, dissimilarity factor (ρ_g) and co-similarity index (μ_cs) are introduced. Different input pulse parameters such as power, pulse width and chirp are optimized to obtain Gaussian temporal doublets at the shortest optimum length (~ few cm) which is sufficiently smaller in comparison to silica fibers reported earlier. The output pulse pairs remain as a doublet for quite a good stability length. In view of serving practical purposes, the possibilities of fluctuations of input power and pulse width are included to investigate the changes in stability length and effective repetition rate (ERR). The change in ERR along the fiber length produces a remarkable change in free carrier concentration in core, which has also been taken into account for the first time as per our knowledge to obtain the temporal pulse doublet in the so designed Si-core fiber.

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Dual-wavelength passively Q-switched Erbium Ytterbium codoped fiber laser based on a nonlinear polarization rotation technique

Cited by 8 publications

References 16 publications

Active Q-switched Fiber Lasers with Single and Dualwavelength Operation

Active Q-switched Fiber Lasers with Single and Dualwavelength Operation

Influence of thickness on tunability performance of plasma sputtered indium tin oxide as Q-switcher

Generation of stable temporal doublet by a single-mode silicon core optical fiber

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