Optical properties and microring laser of conducting polymers with Sn atoms in main chains

Yoshida, Yasuhiko; Nishihara, Yoko; Fujii, Akihiko; Yoshino, Katsumi; Kim, H. K.; Baek, Nam Seob; Choi, Sung-Mo

doi:10.1063/1.1667272

Cited by 13 publications

(7 citation statements)

References 23 publications

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“…The peak height at 590.3 and 611.5 nm increased proportionally with the amount of excitation power over the 0.15 mJ threshold as shown in the Figure 2 inset, suggesting that these peaks represent ASE. The peak at 590 nm was in good agreement with the reported lasing wavelength 582-597 nm of the dye in ethanol or p-dioxane solution [7,8]. The relative intensity of the three peaks depended strongly on individual samples and also varied with subtle difference in excitation alignment.…”

Section: Methodssupporting

confidence: 79%

“…This thickness may be the reason why not observing whispering gallery modes in the PL spectra and why the threshold excitation level was much higher than those reported [4][5][6][7] on similar p-conjugated organic dye specimens. Another possibility was a partial and inhomogeneous illumination of the specimen: the focused excitation beam waist of 8 mm was much smaller than the specimen diameter 125 mm.…”

Section: Resultscontrasting

confidence: 59%

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Amplified Spontaneous Emissions from π-Conjugated Dye Doped Polymer Film with Possible Dye Ordering

Fujimoto

Kinoshita

Tomioka

2007

Molecular Crystals and Liquid Crystals

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Smooth polymer films doped with p-conjugated organic dyes, formed around a multimode silica fiber under the influence of capillary force, exhibited very narrow photoluminescence peaks upon laser excitation as compared with the fluorescence in solution. The peak position showed no dependence on the excitation wavelength, indicating that it could not be explained by a whispering gallery mode that should be observed in a medium with broad optical gain. The peaks can be explained by amplified spontaneous emissions (ASE) because the intensity depended linearly on the excitation intensity with a threshold. When the dye-doped film was formed on the portion of a fiber with the clad etched out and was excited by the linearly polarized laser propagating inside the fiber core, we observed ASE peaks not of the dyes but of the optical fiber itself, suggesting the possibility that the dyes were oriented with their transition moment pointing parallel to the film surface, therefore incapable to be photoexcited. These fiber ASE peaks shifted to longer wavelength when we varied the excitation wavelength to shorter wavelength, which clearly ruled out the possibility of silicate Raman scattering as the origin.

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Section: Methodssupporting

confidence: 79%

Section: Resultscontrasting

confidence: 59%

Amplified Spontaneous Emissions from π-Conjugated Dye Doped Polymer Film with Possible Dye Ordering

Fujimoto

Kinoshita

Tomioka

2007

Molecular Crystals and Liquid Crystals

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“…In sensing applications, the solid gain medium could be spatially separated with the biosample to minimize the undesired effects on biosamples. They were demonstrated by coating a thin film of the dye-doped polymer or the conducting polymer itself either on the inner surface of HOF or on the outer surface of telecom optical fiber [60][61][62][63][64]. Polymers including polystyrene, polyvinyl-pyrrolidone, and poly (benzyl methacrylate) are attractive frame materials for hosting dyes [61,[65][66][67].…”

Section: Organic Dyesmentioning

confidence: 99%

Recent Progress in Fiber Optofluidic Lasing and Sensing

et al. 2021

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Fiber optofluidic laser (FOFL) integrates optical fiber microcavity and microfluidic channel and provides many unique advantages for sensing applications. FOFLs not only inherit the advantages of lasers such as high sensitivity, high signal-to-noise ratio, and narrow linewidth, but also hold the unique features of optical fiber, including ease of integration, high repeatability, and low cost. With the development of new fiber structures and fabrication technologies, FOFLs become an important branch of optical fiber sensors, especially for application in biochemical detection. In this paper, the recent progress on FOFL is reviewed. We focuse mainly on the optical fiber resonators, gain medium, and the emerging sensing applications. The prospects for FOFL are also discussed. We believe that the FOFL sensor provides a promising technology for biomedical analysis and environmental monitoring.

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“…1, was found to be effective for increasing the band gap in order to realize blue emission and for enhancing emission intensity by exciton confinement. 13,14) The matching of the bottom of the conduction band and the top of the valence band of the conducting polymer to the Fermi energy levels of the cathode and the anode, respectively, in PLED devices is also important for achieving carrier injection. In particular, the introduction of nitrogen atoms to the structure was successful lowering the bottom of the conduction band to facilitate electron injection.…”

Section: Oledsmentioning

confidence: 99%

Organic Electronic Devices Based on Polymeric Material and Tunable Photonic Crystal

Yoshino

Ohmori

Fujii

2007

jjap

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The historical background and recent progress in the development of organic electronics and photonic crystals, particularly tunable photonic crystals realized by combining photonic crystal structure with functional organic molecules, are discussed. The novel characteristics of organic electronic devices with mainly conducting polymers, which are related to the optical effects, and the tunable photonic crystals composed of periodic structures of optical wavelength order combined with functional organic materials are demonstrated.

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Optical properties and microring laser of conducting polymers with Sn atoms in main chains

Cited by 13 publications

References 23 publications

Amplified Spontaneous Emissions from π-Conjugated Dye Doped Polymer Film with Possible Dye Ordering

Amplified Spontaneous Emissions from π-Conjugated Dye Doped Polymer Film with Possible Dye Ordering

Recent Progress in Fiber Optofluidic Lasing and Sensing

Organic Electronic Devices Based on Polymeric Material and Tunable Photonic Crystal

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