Lasing From Water Solution of Rhodamine 6G/Gold Nanoparticles: Impact of ${\rm SiO}_{2}$-Coating on Metal Surface

Dong, Lin; Ye, Fei; Chughtai, Adnan; Liuolia, Vytautas; Popov, Sergei; Friberg, Ari T.; Muhammed, Mamoun

doi:10.1109/jqe.2012.2207947

Cited by 9 publications

(7 citation statements)

References 30 publications

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“…In fact, the enhancement and quenching of the (stimulated/ uorescence) emission are the main reasons of improvement and degradation of the output power in low and high gold concentrations, respectively. The results of Figure 7 thoroughly agree with the ndings of other researchers in the eld [28].…”

Section: Resultssupporting

confidence: 90%

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Output power enhancement of Rh6G dye laser by colloidal gold nanoparticles

Moshaii

2016

Scientia Iranica

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Improvement of the e ciency of a Rhodamine 6G dye laser by adding proper concentrations of gold colloidal nanoparticles into the dye solution has experimentally been investigated. Gold colloidal nanoparticles, due to their strong plasmonic peak in the visible region, are expected to have a considerable interaction with Rhodamine 6G dye molecules with broad emission spectrum in the visible range. It is shown that with addition of enough low concentrations (less than 0.4 M/l) of gold nanoparticles to the dye solution, both the output power and the e ciency of the dye laser increase. The best improvement of the laser e ciency reaches 15%. Two amplifying mechanisms exist for e ciency improvement by the nanoparticles, which are resonant energy transfer from the plasmonic nanoparticles to the dye molecules and the high near eld around the nanoparticles. The results indicate that in low concentrations of gold nanoparticles, the amplifying mechanisms dominate the dissipating mechanism of scattering of the pumped light by the nanoparticles. This leads to the e ciency improvement by addition of the nanoparticles.

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Section: Resultssupporting

confidence: 90%

“…The interaction of metal nanoparticles with dye molecules has been studied by several researchers [28][29][30][31][32][33][34][35][36][37]. Both uorescence [38][39][40][41][42] and uorescence enhancement of dye molecules [43][44][45] have been reported as the results of the nanoparticle-dye interaction.…”

Section: Introductionmentioning

confidence: 99%

Output power enhancement of Rh6G dye laser by colloidal gold nanoparticles

Moshaii

2016

Scientia Iranica

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“…Such a low enhancement has been observed in some other studies based on simple MNPs. 29,30 In our study, it is due to the weak coupling of incident excitation field and emission wavelength to the plasmon resonance of dipolar mode of the gold nanosphere. Let us point out that molecule 3 contributed as well to this enhancement.…”

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confidence: 82%

Polarization-dependent fluorescence from an anisotropic gold/polymer hybrid nano-emitter

et al. 2014

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International audienceBased on nanoscale photopolymerization triggered by the dipolar surface plasmon mode, we developed a light-emitting gold nanoparticle/Eosin Y-doped polymer hybrid nanostructure. Due to the anisotropic spatial distribution of the dipolar surface plasmon mode during photopolymerization, this nano-emitter is anisotropic in both geometry and emission. The trapped dye molecules in the hybrid nanostructure display fluorescence intensity that is dependent upon the polarization of the incident excitation light. This nano-emitter further allows the photo-selection of fluorescence configuration (i.e., molecule concentration and refractive index of active medium) by controlling the incident polarization

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“…Large developments of shape control enable nowadays to synthesize nanoparticles of non-spherical shapes, such as rods, prisms, cubes, cuboctahedrons, octahedrons, decahedrons, icosahedrons, truncated octahedrons, etc. Several studies about the stability under photoirradiation of gold nanoparticles have also been reported [37][38][39][40][41][42][43][44] . Synthesis of anisotropic structures such as gold nanorods and nanowires were widely studied since Murphy's 20 and El-Sayed's 21-23 pioneering works, and has attracted much attention due to the fine-tuning of light absorption from visible to near infrared just by changing the aspect ratios (length/diameter).…”

Section: Introductionmentioning

confidence: 98%

Photostability of gold nanoparticles with different shapes: the role of Ag clusters

et al. 2015

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Anisotropic gold nanostructures prepared by the seed method in the presence of Ag ions have been used to study their photostability to low-power UV irradiation (254 nm) at room temperature. It has been observed that, whereas spheres are very stable to photoirradiation, rods and prisms suffer from photocorrosion and finally dissolve completely with the production of Au(III) ions. Interpretation of these differences is based on the presence of semiconductor-like Ag clusters, adsorbed onto rods and prisms, able to photocorrode the Au nanoparticles, which are absent in the case of Au spheres. We further show direct evidence of the presence of Ag clusters in Au nanorods by XANES. These results confirm a previous hypothesis (J. Am. Chem. Soc., 2014, 136, 1182-1185) about the major influence of very stable small Ag clusters, not only on the anisotropic formation of nanostructures but also on their photostability.

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Lasing From Water Solution of Rhodamine 6G/Gold Nanoparticles: Impact of ${\rm SiO}_{2}$-Coating on Metal Surface

Cited by 9 publications

References 30 publications

Output power enhancement of Rh6G dye laser by colloidal gold nanoparticles

Output power enhancement of Rh6G dye laser by colloidal gold nanoparticles

Polarization-dependent fluorescence from an anisotropic gold/polymer hybrid nano-emitter

Photostability of gold nanoparticles with different shapes: the role of Ag clusters

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