Development of all-fiber nanosecond oscillator using actively Q-switched technologies and modulators

Chen, Xuechun; Wang, Nan; He, Changyan; Xin, Lin

doi:10.1016/j.optlastec.2022.108709

Cited by 19 publications

(6 citation statements)

References 192 publications

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“…The AOM with a typical response time of 10 ns is currently the mainstream modulator used for active Q-switching in all-fiber lasers [27]. For example, in Tm-doped fiber lasers Qswitched by the AOM in configuration with multiple stages of amplification, the maximum output average power over 50 or 100 W can be achieved [41,42].…”

Section: Discussionmentioning

confidence: 99%

“…The highest peak power and energy of an all-fiber laser of 5 kW and 0.2 mJ with a 20 kHz repetition rate was obtained in a linearly polarized ytterbium-doped fiber laser at a wavelength of 1064 nm [26]. A recent paper [27] presents a broad review and the current state of research on the actively Q-switched all-fiber lasers. Active Q-switching technologies and Q-factor optical modulators were considered in detail.…”

Section: Introductionmentioning

confidence: 99%

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The Dynamics of Multi-Peak Pulsed Generation in a Q-Switched Thulium-Doped Fiber Laser

et al. 2022

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We demonstrate a detailed theoretical and experimental study of a thulium-doped fiber laser being Q-switched by means of an acousto-optic modulator. The processes leading to the generation of discontinuous multi-peak pulses with an energy of up to 5 μJ and a nanosecond structure are described. The dynamics of the multi-peak structure’s evolution is demonstrated and a method of switching to a single-pulse mode is proposed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Dynamics of Multi-Peak Pulsed Generation in a Q-Switched Thulium-Doped Fiber Laser

et al. 2022

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“…The previous reports also have shown that Q-switched fiber lasers have demonstrated their effectiveness in laser cutting and welding applications. Chen et al [7] presents a study on high-power Q-switched fiber lasers for efficient and precise cutting of thin metal sheets. Furthermore, studies by Saunders et al [8] explore the use of Q-switched fiber lasers for laser welding of dissimilar materials, offering excellent weld quality and control.…”

Section: Introductionmentioning

confidence: 99%

Q-switched pulse generation in L-band region with polyacrylonitrile saturable absorber

Ahmad,

Salam,

Mokhtar

et al. 2024

Phys. Scr.

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In this study, we assess the practicality of using Polyacrylonitrile (PAN) as a saturable absorber (SA) to generate Q-switched pulses in an erbium-doped fibre laser (EDFL) cavity. A successful combination of PAN, a resin material, and polyvinyl alcohol (PVA) resulted in the formation of a SA film. This film was utilised to generate stable Q-switched pulses operating in a long-wavelength band of 1572 nm. The greatest repetition rate achieved was 66.1 kHz, while the minimum pulse width was 2.43 µs. The maximum pulse energy was achieved at 52 nJ and measured at a pump power of 175.9 mW. To the best of our knowledge, this study is the first report of EDFL passive Q-switching employing a PAN absorber.

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“…High-energy short-pulse laser generation has been a current research hotspot due to its unique characteristics of short pulse duration and high peak power, which have good application prospects in fields including laser processing [1,2], laser ranging [3,4] and laser ignition [5,6]. At present, there are several methods for obtaining short-pulse lasers, such as Q-switched technology [7,8] and mode-locked technology [9][10][11]. Q-switched technology is used for generating high-energy short pulses with low cost, but it can only output subnanosecond pulses due to the size limitations of the gain medium imposed by the cavity length.…”

Section: Introductionmentioning

confidence: 99%

Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

Han,

Liu,

et al. 2024

Photonics

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A pulse duration compression technique that combines stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) was presented in this study, achieving an output pulse duration of 48.3 ps. The feasibility of this approach has been experimentally demonstrated. To be specific, a pulse duration of 7.4 ns is compressed to 48.3 ps with an energy of 5.27 mJ, and the energy efficiency of the SRS pulse duration compression system is up to 21.84%. Moreover, this study provides a practical method for reliably generating high-energy short pulses.

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Development of all-fiber nanosecond oscillator using actively Q-switched technologies and modulators

Cited by 19 publications

References 192 publications

The Dynamics of Multi-Peak Pulsed Generation in a Q-Switched Thulium-Doped Fiber Laser

The Dynamics of Multi-Peak Pulsed Generation in a Q-Switched Thulium-Doped Fiber Laser

Q-switched pulse generation in L-band region with polyacrylonitrile saturable absorber

Pulse Duration Compression by Two-Stage Stimulated Brillouin Scattering and Stimulated Raman Scattering

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