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Graphene based saturable absorber

WebApr 30, 2024 · Two-dimensional material nanosheets have always been a research hotspot because of their unique structure and properties. We report mode-locked operation in ytterbium-doped fiber laser (YDFL) for the first time by adopting Fe3O4 nanosheets as a saturable absorber (SA). The laser is capable of generating 456 ps pulses, centered … WebA passively mode-locked Yb-doped fiber laser is demonstrated based on a band-pass filter together with a novel fabricated single-wall carbon nanotubes (SWCNT) wallpaper absorber. Mode-locking can be achieved with a low threshold pump power of 32 mW. The proposed fiber laser operates at 1064 nm with the spectral width of about 0.57 nm and …

Passive harmonic mode locking in erbium-doped fiber laser with graphene …

WebMar 19, 2024 · In this Letter, we demonstrate an all-polarization-maintaining, stretched-pulse Tm-doped fiber laser generating ∼200 fs pulses centered at 1945 nm. As a saturable absorber, a graphene/poly(methyl methacrylate) composite was used. To the best of our knowledge, this is the first demonstration of stretched-pulse operation of a graphene … WebMay 20, 2013 · This is the shortest reported pulse duration achieved from a Tm-doped laser mode-locked by graphene saturable absorber and such cost-effective and stable fiber lasers might be considered as sources for mid-infrared spectroscopy and remote sensing. We report an all-fiber Tm-doped fiber laser mode-locked by graphene saturable … prank kiss candle https://cleanbeautyhouse.com

Graphene-Plasmonic Hybrid Metasurface Saturable Absorber

WebApr 3, 2015 · We reported that the photonic crystal fiber (PCF) filled with TI:Bi2Te3 nanosheets solution could act as an effective saturable absorber (SA). Employing this TI-PCF SA device; we constructed an ytterbium-doped all-fiber laser oscillator and achieved the evanescent wave mode-locking operation. Due to the large cavity dispersion; the … WebAbstract. We demonstrate saturable absorption and ultrafast recovery of subwavelength (~λ/5) graphene-plasmonic hybrid metasurfaces. Measurements indicate a saturation fluence as low as 0.15μJ/cm 2 and a recovery time … WebApr 3, 2024 · In mode-locked lasers, saturable absorbers are critical components for the creation of ultrafast pulses. Unfortunately, carbon-nanotube (CNT)-, graphene-, or semiconductor saturable absorber mirror (SESAM)-based saturable absorbers often have a narrow bandwidth range, high cost, and limited robustness (in terms of lifetime) … prank lightswitch plate

Passively Mode-Locked Ytterbium-Doped Fiber Laser Based on …

Category:PECVD-derived graphene saturable absorber mirror for 2.8

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Graphene based saturable absorber

Graphene-clad microfibre saturable absorber for ultrafast fibre …

WebMay 1, 2024 · The SA used is based on a SMF with short waveguides and covered with a layer of graphene. The waveguide writing process is as follows. A standard SMF is … WebAs a Dirac material, an allotrope of graphene, namely γ-graphyne (γ-GY), is proved to have excellent nonlinear optical properties. Unfortunately, the saturable absorption properties and ultrafast photonics applications of γ-GY at the 1.5 μm band, which play vital roles in optical communication, have …

Graphene based saturable absorber

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WebMar 6, 2024 · Saturable absorption is a nonperturbative nonlinear optical phenomenon that plays a pivotal role in the generation of ultrafast light pulses. Here we show that this … WebNov 1, 2024 · We report on the characteristics of soliton pulses in the passively mode-locked all-fiber lasers containing the microfiber-based Co 2+:ZnS-film saturable absorbers (SAs) under different average dispersion.The microfiber-based Co 2+:ZnS-film SAs are fabricated by electron beam evaporation technology.The conventional soliton (CS) centered at …

WebAug 31, 2016 · Controlling the modulation depth of graphene-based saturable absorbers. As shown in the previous section, the modulation depth of a single graphene layer at the two most popular fiber laser wavelengths (1 and 1.55 μm) is quite small, at the level of 1%. Typically, in the case of fiber lasers, such modulation depth is insufficient to initiate ... WebNov 1, 2024 · Wavelength-tunable pulsed fiber lasers have many potential applications in sensing, communications, spectroscopy, and medicine. Pulsed fiber lasers based on two-dimensional (2D) materials are easier and simpler to integrate into the laser cavity than those based on traditional mode-locked techniques such as nonlinear polarization …

WebJun 1, 2024 · Saturable absorber based on graphene nano-particles is investigated to obtain evanescent-wave mode-locking regime at which is proven to be a better … WebApr 11, 2024 · Q-switched and vector soliton pulses from an Er-doped fiber laser with high stability based on a γ-graphyne saturable absorber . Qingbo Wang, a Zhuo ... As a …

WebFeb 10, 2014 · 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 …

WebFurthermore, different approaches for ultrashort pulse generation using active (synchronous and asynchronous) and/or passive mode-locking techniques are discussed, as well as the employment of nonlinear optical phenomena (Kerr effect) and several two-dimensional nanomaterials as saturable absorbers, such as carbon nanotubes, graphene, graphite ... prank lighter pop up weinersciatica pain after hip replacementWebJul 28, 2014 · Graphene saturable absorbers (GSAs) have been widely applied in ultra-fast mode-locked fiber lasers. Thanks to the broadband advantage of graphene, we theoretically and experimentally … prank kiss candles