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Atomic‐Layer Graphene as a Saturable Absorber for ...

Here, use of atomic layer graphene as saturable absorber in a mode‐locked fiber laser for the generation of ultrashort soliton pulses (756 fs) at the telecommunication band is demonstrated. The modulation depth can be tuned in a wide range from 66.5% to 6.2% by varying the graphene thickness. These results suggest that ultrathin graphene ...

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Saturable Absorber Based on Graphene-Covered …

2013-6-20 · Abstract: A polarization-dependent saturable absorber is developed by the use of graphene-polymer film covered microfiber. The evanescent field of the guided mode propagating along the microfiber can effectively interact with graphene. Polarization analysis shows that the single-layer graphene-based saturable absorber is more sensitive to polarization and has larger modulation depth …

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Graphene based terahertz absorbers - Phys.org

Graphene is a promising saturable absorber as it has intrinsic broadband operations and ultrafast recovery time along with an ease of fabrication and integration, as first demonstrated in ultra ...

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Graphene-clad microfibre saturable absorber for …

GCM saturable absorber. The microfibre, with a minimum diameter of ~6 μm, is fabricated via a flame-brushing technique and integrated onto a hollow glass substrate, as shown in Fig. 2(b).The monolayer graphene is grown on Cu foil using the chemical vapour deposition (CVD) method 30.First, the polymethyl methacrylate (PMMA)/graphene sheet is wrapped around the microfibre, as shown in Fig. 3(b).

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Nanographene-Based Saturable Absorbers for …

The generation of femtosecond pulse laser in the erbium-doped fiber laser system is presented by integrating of the nanographene-based saturable absorbers (SAs). A simplified method of dispersed nanographene-based SAs side-polished fiber device with controllable polished length and depth was also developed. The dependence of geometry of a graphene-deposited side-polished fiber device on ...

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Graphene–Bi2Te3 Heterostructure as Saturable …

2015-6-19 · Graphene-Bi 2 Te 3 Heterostructure as Broadband Saturable Absorber for Ultra-Short Pulse Generation in Er-Doped and Yb-Doped Fiber Lasers. IEEE Journal of Selected Topics in Quantum Electronics 2017 , 23 (1) , 1-5.

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Nanographene-Based Saturable Absorbers for …

The generation of femtosecond pulse laser in the erbium-doped fiber laser system is presented by integrating of the nanographene-based saturable absorbers (SAs). A simplified method of dispersed nanographene-based SAs side-polished fiber device with controllable polished length and depth was also developed. The dependence of geometry of a graphene-deposited side-polished fiber device on ...

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Nonlinear Optical Response of Graphene Oxide …

Two-dimensional (2D) materials as saturable absorbers (SAs) have attracted intense interest for applications in pulsed laser generation because of their distinguishing optical properties. However, the existing methods of preparing SAs were insufficient. Here, we fabricated graphene oxide (GO) SAs by Langmuir-Blodgett (LB) methods for passively Q-switched Nd:YAG laser.

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Wavelength-Versatile Graphene-Gold Film Saturable …

An ultra-broadband graphene-gold film saturable absorber mirror (GG-SAM) with a spectral coverage exceeding 1300 nm is experimentally demonstrated for mode-locking of bulk solid-state lasers. Owing to the p-type doping effect caused by graphene-gold ...

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Graphene saturable absorbers for VECSELs — Yonsei …

We report mode-locking of an optically pumped VECSEL using a graphene-based saturable absorber mirror (GSAM). Self-starting and stable modelocked operation is demonstrated with 473 fs pulses at 1.5 GHz repetition rate and 949 nm center wavelength. Wavelength tuning is …

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Wavelength-Versatile Graphene-Gold Film Saturable …

The fabricated graphene-gold film substrate was characterised and used as saturable absorber mirror in laser experiments. Mode-locking experiments A schematic of the mode-locked laser at the wavelength of 1 μm is shown in Figure 8 .

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Graphene saturable absorbers for VECSELs — Yonsei …

We report mode-locking of an optically pumped VECSEL using a graphene-based saturable absorber mirror (GSAM). Self-starting and stable modelocked operation is demonstrated with 473 fs pulses at 1.5 GHz repetition rate and 949 nm center wavelength. Wavelength tuning is …

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Graphene saturable absorbers for VECSELs — Yonsei …

We report mode-locking of an optically pumped VECSEL using a graphene-based saturable absorber mirror (GSAM). Self-starting and stable modelocked operation is demonstrated with 473 fs pulses at 1.5 GHz repetition rate and 949 nm center wavelength. Wavelength tuning is …

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Graphene saturable absorbers for VECSELs — Yonsei …

We report mode-locking of an optically pumped VECSEL using a graphene-based saturable absorber mirror (GSAM). Self-starting and stable modelocked operation is demonstrated with 473 fs pulses at 1.5 GHz repetition rate and 949 nm center wavelength. Wavelength tuning is …

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Low-loss flake-graphene saturable absorber mirror for ...

Saturable absorbers are a key component for mode-locking femtosecond lasers. Polymer films containing graphene flakes have recently been used in transmission as laser mode-lockers but suffer from high nonsaturable loss, limiting their application in low-gain lasers. Here, we present a saturable absorber mirror based on a film of pure graphene flakes.

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Graphene based terahertz absorbers - Phys.org

Graphene is a promising saturable absorber as it has intrinsic broadband operations and ultrafast recovery time along with an ease of fabrication and integration, as first demonstrated in ultra ...

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Graphene-clad microfibre saturable absorber for …

GCM saturable absorber. The microfibre, with a minimum diameter of ~6 μm, is fabricated via a flame-brushing technique and integrated onto a hollow glass substrate, as shown in Fig. 2(b).The monolayer graphene is grown on Cu foil using the chemical vapour deposition (CVD) method 30.First, the polymethyl methacrylate (PMMA)/graphene sheet is wrapped around the microfibre, as shown in Fig. 3(b).

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Graphene–Bi2Te3 Heterostructure as Saturable …

2015-6-19 · Graphene-Bi 2 Te 3 Heterostructure as Broadband Saturable Absorber for Ultra-Short Pulse Generation in Er-Doped and Yb-Doped Fiber Lasers. IEEE Journal of Selected Topics in Quantum Electronics 2017 , 23 (1) , 1-5.