Random lasing from dye-Ag nanoparticles in polymer films: Improved lasing performance by localized surface plasmon resonance

He, Daisi; Bao, Weiying; Li, Long; Zhang, Peng; Jiang, Maohua; Zhang, Dingke

doi:10.1016/j.optlastec.2016.12.036

Cited by 16 publications

(7 citation statements)

References 24 publications

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“…Furthermore, random lasers can be coherent or incoherent depending on whether the scattered light makes a closed round trip in the gain medium . A great variety of multiple scattering media, such as metal nanomaterials, − semiconductors, , dielectric materials, − and even biological materials, − have been used as scatterers for random lasing.…”

Section: Introductionsupporting

confidence: 53%

Lotus-Leaf-Inspired Flexible and Tunable Random Laser

Líu

et al. 2020

ACS Appl. Mater. Interfaces

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We describe herein a flexible and tunable random laser made from a flexible poly(dimethylsiloxane) substrate. The substrate is prepared by casting via soft lithography from a lotus leaf to produce a micropapilla surface structure similar to that of a lotus leaf. The micropapilla provides efficient multiple scattering for the photons generated in the gain medium, and random lasing emerges because photons undergo closed-loop paths by scattering from three equilaterally arranged micropapillae. Given the diverse distribution of microscale features on the soft substrate, the random laser spectrum can be tuned by as much as 26.0 nm by changing the pump position. Furthermore, the random laser can be easily tuned by about 14 nm by flexing it, which modifies the micropapilla density and thereby changes the reabsorption strength of the laser dye. The photostability of the random laser is ensured by sealing the gain medium (i.e., dye solution) in a closed system. The results provide a promising method to realize a variety of laser-based applications such as optical biosensors on chips, microscale structural alteration detectors, flexible wearable devices, and multicolor (even white) random lasers.

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Section: Introductionsupporting

confidence: 53%

Lotus-Leaf-Inspired Flexible and Tunable Random Laser

Líu

et al. 2020

ACS Appl. Mater. Interfaces

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“…Over the past decade, plasmonic random lasers have attracted considerable attention because of their great potential for use as display and sensing devices. [1][2][3][4][5][6][7][8] The lasing threshold of a plasmonic random laser is much lower than that of a conventional random laser because of its large scattering cross-section and the localized surface plasmon resonance of the metal nanoparticles (NPs) used in the structure. [9][10][11][12][13] Additionally, red-greenblue (RGB) plasmonic random lasers have been studied as potential multicolor output devices.…”

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confidence: 99%

A RGB random laser on an optical fiber facet

et al. 2017

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“…et al reported that hybrid multilayered plasmonic nanostars can reduce the pumping threshold for random lasing [ 20 ]. Follow-up demonstrations have motivated researchers to study localized surface plasmon resonance random multimode lasers in polymer thin films doped with gain dye and silver nanoparticles [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Large-Area Biocompatible Random Laser for Wearable Applications

Guo

et al. 2021

Nanomaterials

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Recently, wearable sensor technology has drawn attention to many health-related appliances due to its varied existing optical, electrical, and mechanical applications. Similarly, we have designed a simple and cheap lift-off fabrication technique for the realization of large-area biocompatible random lasers to customize wearable sensors. A large-area random microcavity comprises a matrix element polymethyl methacrylate (PMMA) in which rhodamine B (RhB, which acts as a gain medium) and gold nanorods (Au NRs, which offer plasmonic feedback) are incorporated via a spin-coating technique. In regards to the respective random lasing device residing on a heterogenous film (area > 100 cm2), upon optical excitation, coherent random lasing with a narrow linewidth (~0.4 nm) at a low threshold (~23 μJ/cm2 per pulse) was successfully attained. Here, we maneuvered the mechanical flexibility of the device to modify the spacing between the feedback agents (Au NRs), which tuned the average wavelength from 612.6 to 624 nm under bending while being a recoverable process. Moreover, the flexible film can potentially be used on human skin such as the finger to serve as a motion and relative-humidity sensor. This work demonstrates a designable and simple method to fabricate a large-area biocompatible random laser for wearable sensing.

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Random lasing from dye-Ag nanoparticles in polymer films: Improved lasing performance by localized surface plasmon resonance

Cited by 16 publications

References 24 publications

Lotus-Leaf-Inspired Flexible and Tunable Random Laser

Lotus-Leaf-Inspired Flexible and Tunable Random Laser

A RGB random laser on an optical fiber facet

Large-Area Biocompatible Random Laser for Wearable Applications

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