Graphene q-switched tunable fiber laser
WebApr 11, 2024 · Hence in this paper, we report the first demonstration of a thulium doped fiber laser with a wavelength-tunable, passive Q-switched output using a graphene-polyvinyl-alcohol composite film for operation in the 2.0 µm region. The proposed laser has a wavelength-tunable output spanning from 1932.0 nm to 1946.0 nm, giving a total … WebA passively Q-switched erbium-doped fiber laser (EDFL) was experimented on by employing graphene, single walled carbon nanotubes (SWCNT) and multi-walled carbon nanotube (MWCNT) saturable absorbers (SA). The SA film was obtained by embedding the graphene, SWCNT and MWCNT into polyvinyl alcohol (PVA). The graphene SA was …
Graphene q-switched tunable fiber laser
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WebNov 2, 2011 · We demonstrated a wide-band tunable passively Q-switched fiber laser by using a graphene-based saturable absorber (SA). The graphene SA was prepared through the optically driven deposition method. The Q-switched operation was initiated with a low pump threshold of about 33 mW. WebA stable Q-switched erbium-doped fiber laser with a tunable range from 1522 nm to 1568 nm is demonstrated experimentally. Self-mode locking effect in a wideband tunable graphene-based passively Q-switched erbium-doped fiber …
WebOct 31, 2010 · We demonstrate a wideband-tunable Q-switched fiber laser exploiting a graphene saturable absorber. We get ~2us pulses, tunable between 1522 and 1555nm with up to~40nJ energy. This is a simple and low-cost light source for metrology, environmental sensing and biomedical diagnostics. WebOct 30, 2010 · We demonstrate a wideband-tunable Q-switched fiber laser exploiting a graphene saturable absorber. We get ~2us pulses, tunable between 1522 and 1555nm with up to~40nJ energy. This is a...
WebJul 10, 2024 · A wavelength-tunable Q-switched erbium-doped fiber laser based on a digital micromirror device (DMD) is experimentally demonstrated. The Q-switched pulses are generated by incorporating a saturable absorption device made of graphene oxide. Stable Q-switched pulses at 1.5 µm band are obtained at a lo … WebApr 10, 2024 · The use of unipolar barrier structures that can selectively block dark current but allow photocurrent to flow unimpededly has emerged as an effective strategy for constructing high-performance photodetectors. In particular, two-dimensional (2D) materials with tunable band structures and self-passivated surfaces not only satisfy band …
WebJan 1, 2011 · For passive Q-switching, graphene has also been used as a saturable absorber (SA) in an Er-doped fiber laser, and the wavelength …
solutions for canker soresWebBroadband light therapy, or BBL, is a non-invasive laser treatment that improves and treats many skin conditions related to aging, sun damage and heredity. This laser uses light energy to deliver pulses of light into the upper levels of the skin to stimulate collagen production, reduce melanin that is responsible for pigmented lesions (freckles ... solutions for cabinet spice storageWebMar 10, 2015 · The tunable laser was based on a VBG, graphene SA, and three mirrors system. Tunable operation was achieved by rotating the working angle of the VBG and the high reflectivity end mirror, meanwhile the Q-switched operation was obtained by inserting and carefully aligning the graphene SA. small boat trailer rentals near meWebAbstract. We report experimental observation of multimode Q-switching and spatiotemporal mode locking in a multimode fiber laser.A typical steady Q-switching state is achieved with a 1.88 μs pulse duration, a 70.14 kHz repetition rate, and a 215.8 mW output power, corresponding to the single pulse energy of 3.08 μJ.We find weak spatial filtering is … solutions for care in north riversideWebOct 26, 2024 · Here, we fabricate an optical-controllable fiber filter based on a graphene-assisted micro-fiber Bragg grating, whose wavelength can be linearly tuned by controlling pump light, and a tuning step of 3.1 pm is achieved. By cooperating it with a fiber laser operating at a Q-switched mode-locked state, the lasing wavelength is all-optically ... solutions for burnoutWebJan 29, 2024 · In this paper, we demonstrate a narrow-linewidth tunable fiber laser based on laser-induced graphene (LIG) paper-heated fiber Bragg grating (FBG) with low voltage. A linewidth of less than 600 Hz is achieved by the combination of a piece of unpumped Er-doped fiber and an FBG. Changing the temperature of the FBG will result in the central … small boat trailersWebWidely tunable operation of a mixed crystal Tm:(LuxY1-x)3Al5O12 (Tm:LuYAG) laser is reported using a volume Bragg grating (VBG) as the wavelength selective component. The operating wavelength was continuously tunable from 1935.3 to 1994.9 nm (corresponding to a tuning range of ~ 60 nm), and a maximum output power of 1.76 W at 1999.7 nm was … solutions for childhood obesity