Direct generation of an ultrafast vortex beam in a CVD-graphene-based passively mode-locked Pr:LiYF<sub>4</sub> visible laser

Li, Nan; Huang, Junjie; Xu, Bin; Cai, Yang; Lu, Jie; Zhan, Linjie; Luo, Zhengqian; Xu, Huiying

doi:10.1364/prj.7.001209

Cited by 43 publications

(6 citation statements)

References 38 publications

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“…With the monolayer graphene as SA and Ti: sapphire as the laser material, a stable continuous wave (CW), mode-locked visible laser has been obtained [148], reaching a pulse duration of 63 fs (see Figure 12B) and maximum output power up to 480 mW (see Figure 12D). Utilizing Pr 3+ : LuLiF 4 and Pr 3+ : LiYF 4 as gain media, passively mode-locked solid-state crystal lasers working at the wavelengths of 639 and 721 nm have been realized [180,181], obtaining output powers of 20 and 22 mW, respectively. According to their bandgap structure, TMDs are considered suitable SAs for visible lasers, which have already covered the spectral range 532-721 nm in both solid-state crystal and fiber lasers.…”

Section: Passively Mode-locked Lasers Operating In Visible Regionmentioning

confidence: 99%

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

et al. 2020

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Abstract The recent renaissance in pulsed lasers operating in the visible spectral region has been driven by their significant applications in a wide range of fields such as display technology, medicine, microscopy, material processing, and scientific research. Low-dimensional nanomaterials as saturable absorbers are exploited to create strong nonlinear saturable absorption for pulse generation at visible wavelengths due to their absorption peaks located in visible spectral region. Here we provide a detailed overview of visible-wavelength pulsed lasers based on low-dimensional nanomaterials, covering the optical properties and various integration strategies of these nanomaterials saturable absorbers, and their performance from solid-state as well as fiber pulsed lasers in the visible spectral range. This emerging application domain will undoubtedly lead to the rapid development of visible pulsed lasers.

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Section: Passively Mode-locked Lasers Operating In Visible Regionmentioning

confidence: 99%

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

et al. 2020

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“…Many Pr 3+ -doped materials, such as Pr 3+ :YLF [5][6][7][8][9][10][11][12], Pr 3+ :ZBLAN [13,14], and Pr 3+ :YAP [15], have been shown to have great potential due to their large stimulated radiation cross-section in the visible region. Among these materials, Pr 3+ :YLF crystals have attracted great research interest over the past decades because their low phonon energy contributes to lower threshold pump powers and excellent visible laser performance.…”

Section: Introductionmentioning

confidence: 99%

LD-pumped high-power continuous-wave Pr³⁺:YLF deep red lasers at 718.5 and 720.8 nm

Liu

Shi

et al. 2021

Laser Phys.

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We demonstrated 22 W LD-pumped high-power continuous-wave (CW) deep red laser operations at 718.5 and 720.8 nm based on an a-cut Pr3+:YLF crystal. The output power of both polarized directions reached the watt-level without output power saturation. A single wavelength laser operated at 720.8 nm in the π-polarized direction was achieved, with a high output power of 4.5 W and high slope efficiency of approximately 41.5%. To the best of our knowledge, under LD-pumped conditions, the laser output power and slope efficiency are the highest at 721 nm. By using a compact optical glass plate as an intracavity etalon, we suppressed the π-polarized 720.8 nm laser emission. And σ-polarized single-wavelength laser emission at 718.5 nm was achieved, with a maximum output power of 1.45 W and a slope efficiency of approximately 17.8%. This is the first time that we have achieved the σ-polarized laser emission at 718.5 nm generated by Pr3+:YLF lasers.

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“…Meanwhile, rapid progress has also been made in visible-wavelength passive fibre components and visible-available nanomaterial-based saturable absorbers (SAs, e.g. graphene 21,22 , TMDs 23,24 and CNTs 25 ). In particular, a new operation regime, dissipative soliton resonance (DSR), was proposed to overcome the difficulty of passive mode locking in a large normal-dispersion fibre cavity [26][27][28] .…”

Section: Introductionmentioning

confidence: 99%

Towards visible-wavelength passively mode-locked lasers in all-fibre format

et al. 2020

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Mode-locked fibre lasers (MLFLs) are fundamental building blocks of many photonic systems used in industrial, scientific and biomedical applications. To date, 1-2 μm MLFLs have been well developed; however, passively modelocked fibre lasers in the visible region (380-760 nm) have never been reported. Here, we address this challenge by demonstrating an all-fibre visible-wavelength passively mode-locked picosecond laser at 635 nm. The 635 nm mode-locked laser with an all-fibre figure-eight cavity uses a Pr/Yb codoped ZBLAN fibre as the visible gain medium and a nonlinear amplifying loop mirror as the mode-locking element. First, we theoretically predict and analyse the formation and evolution of 635 nm mode-locked pulses in the dissipative soliton resonance (DSR) regime by solving the Ginzburg-Landau equation. Then, we experimentally demonstrate the stable generation of 635 nm DSR mode-locked pulses with a pulse duration as short as~96 ps, a radio-frequency signal-to-noise ratio of 67 dB and a narrow spectral bandwidth of <0.1 nm. The experimental results are in excellent agreement with our numerical simulations. In addition, we also observe 635 nm noise-like pulse operation with a wide (>1 nm) and modulated optical spectrum. This work represents an important step towards miniaturized ultrafast fibre lasers in the visible spectral region.

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Direct generation of an ultrafast vortex beam in a CVD-graphene-based passively mode-locked Pr:LiYF₄ visible laser

Cited by 43 publications

References 38 publications

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

LD-pumped high-power continuous-wave Pr³⁺:YLF deep red lasers at 718.5 and 720.8 nm

Towards visible-wavelength passively mode-locked lasers in all-fibre format

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Direct generation of an ultrafast vortex beam in a CVD-graphene-based passively mode-locked Pr:LiYF4 visible laser

Cited by 43 publications

References 38 publications

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

Visible-wavelength pulsed lasers with low-dimensional saturable absorbers

LD-pumped high-power continuous-wave Pr3+:YLF deep red lasers at 718.5 and 720.8 nm

Towards visible-wavelength passively mode-locked lasers in all-fibre format

Contact Info

Product

Resources

About

Direct generation of an ultrafast vortex beam in a CVD-graphene-based passively mode-locked Pr:LiYF₄ visible laser

LD-pumped high-power continuous-wave Pr³⁺:YLF deep red lasers at 718.5 and 720.8 nm