Random lasing with enhanced photostability of silver nanoparticle doped polymer optical fiber laser

Sebastian, Suneetha; Linslal, C.L.; Vallabhan, C. P. G.; Nampoori, V. P. N.; Radhakrishnan, P.; Kailasnath, M.

doi:10.1088/1612-2011/11/5/055108

Cited by 20 publications

(14 citation statements)

References 25 publications

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“…The blueshift with the increasing of the concentrations of the SiO 2 NPs, is shown in figure 2. Similar experimental results have been reported in prior work [10]. Because of a certain NP density, the scattering will begin to be primarily in the backward direction, resulting in a decreased penetration depth, leading to less selfabsorption and a shift in the spectrum toward shorter wavelengths.…”

Section: The Advantage Of the Random Laser From Rh-b Dye Doped With A...supporting

confidence: 86%

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

Kang

Yang

et al. 2016

Laser Phys.

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We have studied the random laser action from a Ag nanoparticle (NP) doped RhodamineB dye medium in different structures: cuvette, liquid crystal cell, fiber. For Ag NPs at a concentration of 50 μg ml −1 , a much lower threshold of 0.15 mJ cm −2 was observed from the Ag NP doped RhodamineB dye medium in optical fiber. The experimental results indicate that the reduction of the threshold energy is due to the combination of localized surface plasmon resonance (LSPR) enhancement effects from the Ag NPs and the confinement effect of the fiber structure. Meanwhile, the solidification of the dye solution makes the lasing mode stable and the emission intensity higher.

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Section: The Advantage Of the Random Laser From Rh-b Dye Doped With A...supporting

confidence: 86%

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

Kang

Yang

et al. 2016

Laser Phys.

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“…The enhanced photostability of gain medium in the presence of metal nanoparticles is mainly for two reasons. The presence of metal nanoparticles in the vicinity of the gain molecules enhances the radiative transitions by reducing the life time and preventing the probability of photo-bleaching [11]. Also, the presence of impurities within the polymer matrix causes thermal absorption, which leads to photo-bleaching.…”

Section: Resultsmentioning

confidence: 99%

“…Here we used the pulsed laser ablation technique in liquid (PLAL) for the fabrication of silver nanoparticles. PLAL is a physical approach for creating pure and agglomeration-free nanoparticles in the host solvent [9][10][11]. In the solvent cyclohexane, the organic dye Bis-MSB has a quantum yield of 0.93 [12,13].…”

Section: Introductionmentioning

confidence: 99%

Laser ablated silver nanoparticles doped blue light-emitting polymer optical fiber with enhanced photostability

Anugop

Kailasnath

2022

J. Phys.: Conf. Ser.

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Here, we demonstrate the fabrication of a stable polymer optical fibre doped with 1,4-bis (2-methylstyryl) benzene (Bis-MSB) that contains silver nanoparticles. Spherical silver nanoparticles of approximate size 15 nm were fabricated using nanosecond laser ablation. A Q-switched Nd: YAG laser operating at 355 nm was used to pump the polymer optical fiber in order to analyse its emission characteristics. The pump pulse energy (PPE) dependent emission spectra from the fiber were analyzed. The observed fluorescence emission was turned to amplified spontaneous emission (ASE) at a PPE of 2.5 mJ. The study demonstrates that the fibre offers superior photostability at an optimum concentration of Ag nanoparticles. The proposed fiber may find potential applications in the development of stable directional optical sources in the blue region.

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“…If the gain of photons exceeds the loss when they spread in the random gain medium, the RLs occur. RLs have been studied in a variety of materials, includ ing LCs [15], human tissues [16], polymer films [17][18][19], fibers [20], LC containing metal nanoparticles (NPs) [21][22][23][24] or TiN NPs [25], and so on. Nematic liquid crystals (NLCs) have high birefringence, alignment controllability, temperature dependence, and volt age responsiveness.…”

Section: Introductionmentioning

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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Random lasing with enhanced photostability of silver nanoparticle doped polymer optical fiber laser

Cited by 20 publications

References 25 publications

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

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

Laser ablated silver nanoparticles doped blue light-emitting polymer optical fiber with enhanced photostability

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

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