Aluminum nanoparticles saturable absorber as a passive <i>Q</i>-switcher for erbium-doped fiber laser ring cavity configuration

Salman, Ali A.; Al‐Janabi, Abdulhadi

doi:10.1088/1555-6611/ab02f8

Cited by 24 publications

(12 citation statements)

References 35 publications

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“…The repetition rate was tunable from 19.17 kHz to 43.24 kHz with minimum pulse width of 7 μs. Up to 150.32 nJ pulse energy was achieved at a pump power of 308.6 mW, which shows a significant improvement in comparison to previous works on Al 2 O 3 -SA [9][10][11] and newly emerged material-based SAs, such as molybdenum aluminum boride (MoAlB) [12], black phosphorus (BP) [13], antimonene (Sb) [14,15], aluminum (Al) [16], and iron oxide (Fe 3 O 4 ) [17]. The experimental findings indicate that α-Al 2 O 3 -SA exhibited excellent nonlinear absorption properties, which further promotes the exploration of metal oxide-based photonic devices in the near future.…”

Section: Introductionmentioning

confidence: 76%

Bulk α-alumina embedded tapered fiber as Q-switcher in an erbium-doped fiber laser

Yusoff,

Chyi,

et al. 2024

Phys. Scr.

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We present bulk α-alumina (Al2O3) in a polydimethylsiloxane matrix decorated tapered fiber with a modulation depth of 11%. The integration of α-Al2O3-saturable absorber (SA) in an erbium-doped fiber laser yielded a Q-switched operating regime within 62.0-308.6 mW pump power. The shortest pulse width was 7 μs, whereas the repetition rate was tunable from 19.17 to 43.24 kHz. This work reveals a substantial improvement over previously reported Al2O3-SA works with a recorded pulse energy of 150.32 nJ and an estimated damage threshold of beyond 6.75 GW/cm2 incident intensity. Our findings suggest that α-Al2O3-SA has enormous potential as a next generation light-absorbing material for high-energy photonic devices.

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Section: Introductionmentioning

confidence: 76%

Bulk α-alumina embedded tapered fiber as Q-switcher in an erbium-doped fiber laser

Yusoff,

Chyi,

et al. 2024

Phys. Scr.

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“…The measured data of absorption at different input intensities for the TeO 2 -PVA SA thin film is shown in figure 2(b), and was fitted using a simple two-level saturable absorption model [6]:…”

Section: Preparation and Characterization Of The Teo 2 -Pvamentioning

confidence: 99%

“…Q-switched pulses are generated via the active or passive Q-switching technique. Based on the passive technique Q-switched fiber lasers have higher benefits of flexibility, simplicity and compactness than others which rely on the active technique [6,7]. The predominant equipment, which, at present, results in a passively Q-switched method, is essentially enabled by a type of nonlinear element-a saturable absorber (SA) [8,9].…”

Section: Introductionmentioning

confidence: 99%

L-band dual wavelength passively Q-switched erbium-doped fiber laser based on tellurium oxide nanoparticle saturable absorber

2019

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We experimentally demonstrate a compact dual wavelength passive Q-switched fiber laser created by an erbium-doped fiber active medium using tellurium oxide nanoparticles (TeO 2 NPs) as a new saturable absorber (SA) material. The saturable absorption properties of the prepared TeO 2 -PVA thin film were systematically measured, and the modulation depth and saturation intensity were 8% and 90 MW cm −2 , respectively. By integrating the proposed SA in an all-fiber ring cavity, a dual wavelength laser with 1568.02 and 1569.09 nm wavelengths was observed without adding spectral filters or polarization maintaining fibers to control the suppression of the mode competition. A frequency difference of 0.13 THz was obtained located in the terahertz waveband. In the meantime, a stable Q-switched regime with a maximal pulse repetition rate of 45.7 kHz, a shortest pulse width of 2.69 µs and maximum pulse energy up to 39.4 nJ was attained at a maximum available pump power of 275 mW. The experimental setup using the TeO 2 NP SA represents a step forward in terahertz development and nonlinear optics.

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“…Generally, the modulation can be fulfilled passively or actively . Passive Q‐switching and mode‐locking can be realized using materials with saturable absorption capability such as graphene, carbon nanotube (CNT), metals nanostructures transition metal dichalcogenides (TMD) and transition metal oxides (TMO) . Among TMO materials, WO 3 emerges as a new SA competitor in nonlinear applications.…”

Section: Introductionmentioning

confidence: 99%

Triple‐wavelength Q‐switched ytterbium‐doped fiber laser based on tungsten oxide as saturable absorber

Salman

Al‐Janabi

2020

Micro & Optical Tech Letters

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In this article, a multiwavelength Q-switched ytterbiumdoped fiber laser using tungsten oxide nanoparticles (WO 3 NPs) as a saturable absorber (SA) is reported for the first time. The SA was prepared by depositing micron-sized layers of WO 3 NPs suspension onto the surface of the fiber tip via direct deposition process. After embedding the SA into an ytterbium-doped fiber laser cavity, self-starting Q-switched performance was realized at a bleaching threshold of 179 mW having a minimum pulse width of 2.92 μs and maximum pulse energy of 9.26 nJ with variable repetition rates from 14.8 to 71.3 kHz. By boosting the pump power and proper adjustment of the polarization controller, steady dual-and triple-wavelength operations were obtained at pump powers of 210 and 275 mW, respectively. The obtained results confirm the practical use of WO 3 as an effective nonlinear modulator for multiwavelength and pulsed fiber lasers near 1 μm wavelength band. K E Y W O R D S multiwavelength, passive saturable absorber, Q-switching, tungsten oxide nanoparticles, YDFL

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Aluminum nanoparticles saturable absorber as a passive Q-switcher for erbium-doped fiber laser ring cavity configuration

Cited by 24 publications

References 35 publications

Bulk α-alumina embedded tapered fiber as Q-switcher in an erbium-doped fiber laser

Bulk α-alumina embedded tapered fiber as Q-switcher in an erbium-doped fiber laser

L-band dual wavelength passively Q-switched erbium-doped fiber laser based on tellurium oxide nanoparticle saturable absorber

Triple‐wavelength Q‐switched ytterbium‐doped fiber laser based on tungsten oxide as saturable absorber

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