Enhancement of random lasing assisted by Ag nanoparticle doped dye medium in solidified fiber

Ye, Lihua; Kang, Jinan; Yang, Huimin; Liu, Bo; Hu, Ziyan; Zu, Yibin; Liu, Yuan; Cui, Yiping

doi:10.1088/1054-660x/26/4/045001

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…Electrically controlled random lasing from dye-doped nematic liquid crystals containing Ag nanoparticles within thin in-plane switching cells gold NPs outperform those of conventional shapes [24]. Ye et al studied the RLs action from RhodamineB dye with sil ver NPs in different structures: cuvette, liquid crystal cell and fiber [33]. Previous works usually use the cuvette, liquid crys tal cell, fiber, and polymer films as sample vessel.…”

Section: Laser Physicsmentioning

confidence: 99%

Electrically controlled random lasing from dye-doped nematic liquid crystals containing Ag nanoparticles within thin in-plane switching cells

An¹,

Wan²,

Deng³

2018

Laser Phys.

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Electrically controlled random lasing from dyedoped nematic liquid crystals (NLCs) containing Ag nanoparticles (NPs) within thin inplane switching (IPS) cells is investigated. As far as we know, this study reports for the first time on random lasing using the IPS cell. Because of the Ag NPs' presence, it is possible for the random lasers to occur in the thin IPS cells. The lasing output intensity depends on the applied electric field on the IPS cell when the pump energy is held constant. As the electric field intensity increases from 0 V µm −1 to 0.50 V µm −1 , the output intensity increases gradually. However, as the electric field intensity increases from 0.5 V µm −1 to 1.00 V µm −1 , the output intensity decreases gradually. At last, when the electric field intensity increases from 1.00 V µm −1 to 1.67 V µm −1 , the emission intensity is basically stable. The variation in the output intensity can be partially attributed to the change in the NLC director distribution under the action of the electric field. This feature can be used to design adjustable light intensity devices.

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Section: Laser Physicsmentioning

confidence: 99%

Electrically controlled random lasing from dye-doped nematic liquid crystals containing Ag nanoparticles within thin in-plane switching cells

An¹,

Wan²,

Deng³

2018

Laser Phys.

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“…Due to the simplicity and low cost, a range of materials such as semiconductors [11], quantum dots [12], nanoparticles [13,14], liquid crystals [15,16], and biological tissue [17] have been used to prepare the structures capable of producing a random lasing effect. A controlled manipulation of the metal-metal oxide Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.…”

Section: Introductionmentioning

confidence: 99%

Observation of stimulated emission from Rhodamine 6G-polymer aggregate adsorbed at foam interfaces

et al. 2018

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This paper reports for the first time the observation of stimulated emissions from the gas-liquid interface between two adjacent bubbles in highly ordered foams containing Rhodamine 6 G and surfactant. Stimulated emissions centred at 595 nm were observed when a monolayer of foam (∼liquid fraction 0.11), placed on a highly reflective surface, was pumped with a 532 nm continuous wave laser directed along ∼45°from the direction perpendicular to the substrate. Additionally, using confocal microscopy and micro-photoluminescence, it was found that the liquid fraction of the foam, the gap between two adjacent bubbles and the incidence angle of the laser are important parameters in guiding the light and promoting stimulated emissions at the interface. The adsorption of the polymer and dye increased the local concentration at the narrowest gaps between pairs of bubbles, which led to the formation of hemispherical micelles-dye agglomerates. The presence of the micelles aggregation caused random scattering induced stimulated emission. These results could have a significant impact on a number of applications, such as photocatalytic conversion at bubble interfaces, where TiO 2 can scatter light and hence reaction rates may be increased.

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“…Recently, a concept of random fiber laser was brought birth for its unique merits, including directional output, simplicity and high lasing efficiency [13][14][15][16][17][18][19][20]. The characters of random lasers are reported in dye-doped liquid crystal [21,22] and the Ag NPs improves the performance of the random fiber laser [23,24]. Random fiber lasers represent a class of very interesting physical features, such as wavelength tunability [25], multiwavelength [26,27], Rayleigh scattering and narrow band [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic random lasing in polymer fiber

Wang

Zhai

et al. 2016

Opt. Express

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A random fiber laser is achieved based on the plasmonic feedback mechanism, which is constructed by first siphoning the polymer solution doped with silver nanoparticles into a 300-μm capillary tube and then evaporating the solvent. Strong amplification of the radiation can be obtained by employing the variable gain region, the fiber waveguide scheme and three-dimensional plasmonic feedback provided by the silver nanoparticles. Low-threshold directional random lasing is observed in the polymer fiber. This simple and straightforward approach facilitates the investigation of plasmonic random fiber lasers.

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Enhancement of random lasing assisted by Ag nanoparticle doped dye medium in solidified fiber

Cited by 9 publications

References 19 publications

Electrically controlled random lasing from dye-doped nematic liquid crystals containing Ag nanoparticles within thin in-plane switching cells

Electrically controlled random lasing from dye-doped nematic liquid crystals containing Ag nanoparticles within thin in-plane switching cells

Observation of stimulated emission from Rhodamine 6G-polymer aggregate adsorbed at foam interfaces

Plasmonic random lasing in polymer fiber

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