Random Laser Based on Waveguided Plasmonic Gain Channels

Zhai, Tianrui; Zhang, Xinping; Pang, Zhaoguang; Su, Xueqiong; Li, Hongmei; Feng, Shengfei; Wang, Li

doi:10.1021/nl2023096

Cited by 186 publications

(102 citation statements)

References 22 publications

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“…To obtain tremendous SERS signal enhancement ability, numerous available approaches such as electron beam lithography (EBL) [14,15], nanoimprintation [16,17], nanosphere lithography (NSL) [18], mask-assisted deposition (MAD) [19], vacuum evaporation, and other strategies have been proposed to fabricate well-ordered or random nanostructures [20,21], which composed of uniform noble metal (Au or Ag) nanoparticles. EBL method can completely control the formation, shape and size of the nanostructures for the design of metallic films with unique LSPR spectra but is too expensive for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of large-scale gold nanoparticle arrays and their application in SERS

et al. 2014

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Surface-enhanced Raman scattering is an effective analytical method that has been intensively applied in the field of identification of organic molecules from Raman spectra at very low concentrations. The Raman signal enhancement that makes this method attractive is usually ascribed to the noble metal nanoparticle (NMNP) arrays which can extremely amplify the electromagnetic field near NMNP surface when localized surface plasmon resonance (LSPR) mode is excited. In this work, we report a simple, facile, and room-temperature method to fabricate large-scale, uniform gold nanoparticle (GNP) arrays on ITO/glass as SERS substrates using a promoted self-assembly deposition technique. The results show that the deposition density of GNPs on ITO/glass surface increases with prolonging deposition time, and nanochain-like aggregates appear for a relatively longer deposition time. It is also shown that these films with relatively higher deposition density have tremendous potential for wideband absorption in the visible range and exhibit two LSPR peaks in the extinction spectra because the electrons simultaneously oscillate along the nanochain at the transverse and the longitudinal directions. The SERS enhancement activity of these GNP arrays was determined using 10-6 M Rhodamine 6G as the Raman probe molecules. A SERS enhancement factor as large as approximately 6.76 × 106 can be obtained at 1,363 cm-1 Raman shift for the highest deposition density film due to the strong plasmon coupling effect between neighboring particles.

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Section: Introductionmentioning

confidence: 99%

Self-assembly of large-scale gold nanoparticle arrays and their application in SERS

et al. 2014

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“…Recently, we demonstrated a plasmonic feedback random laser that consisted of randomly distributed gold nanoisland structures covered by a dye-doped polymer film 7 .…”

Section: Random Lasers Have Attracted Widespread Attention Because Ofmentioning

confidence: 99%

A plasmonic random laser tunable through stretching silver nanowires embedded in a flexible substrate

Zhai

Chen

et al. 2015

Nanoscale

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A mechanically-tunable random laser based on a waveguide-plasmonic scheme has been investigated. This laser can be constructed by spin coating a solution of polydimethylsiloxane doped with the rhodamine 6G organic dye and silver nanowires onto a silicone rubber slab. The excellent overlap of the plasmon resonance peak of the silver nanowires with both the pump wavelength and the photoluminescence spectrum provides the low threshold and tuning properties of the random laser. The random laser wavelength can be tuned from 558 to 565 nm by stretching the soft substrate, which causes reorientation and breakage of the silver nanowires. The polarization state of the random laser can also be changed from random polarization to partial polarization by stretching. The laser performance remains unchanged after the stretching and restoration experiments. These results not only enable easy realization of an ultrathin flexible plasmonic random laser but also provide insights into the mechanisms of three-dimensional plasmonic feedback random lasers.

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“…Various random lasers have been demonstrated based on dielectric nanoparticle scattering [7][8][9] and metal nanoparticle surface plasmonic scattering [10][11][12][13]. In particular, random lasing based on localized surface plasmon resonances (LSPR) have demonstrated the characteristics of low threshold and high performance [7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Broadband plasmonic silver nanoflowers for high-performance random lasing covering visible region

Chang

Shi

et al. 2017

Nanophotonics

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Multicolor random lasing has broad potential applications in the fields of imaging, sensing, and optoelectronics. Here, silver nanoflowers (Ag NF) with abundant nanogaps are fabricated by a rapid one-step solution-phase synthesis method and are first proposed as effective broadband plasmonic scatterers to achieve different color random lasing. With abundant nanogaps and spiky tips near the surface and the interparticle coupling effect, Ag NFs greatly enhance the local electromagnetic field and induce broadband plasmonic scattering spectra over the whole visible range. The extremely low working threshold and the high-quality factor for Ag NF-based random lasers are thus demonstrated as 0.24 MW cm −2 and 11,851, respectively. Further, coherent colorful random lasing covering the visible range is realized using the dye molecules oxazine (red), Coumarin 440 (blue), and Coumarin 153 (green), showing high-quality factor of more than 10,000. All these features show that Ag NF are highly efficient scatterers for high-performance coherent random lasing and colorful random lasers.

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Random Laser Based on Waveguided Plasmonic Gain Channels

Cited by 186 publications

References 22 publications

Self-assembly of large-scale gold nanoparticle arrays and their application in SERS

Self-assembly of large-scale gold nanoparticle arrays and their application in SERS

A plasmonic random laser tunable through stretching silver nanowires embedded in a flexible substrate

Broadband plasmonic silver nanoflowers for high-performance random lasing covering visible region

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