首页|Silver nanowire mediated random lasing in silica cladded dye doped polymer microstructure
Silver nanowire mediated random lasing in silica cladded dye doped polymer microstructure
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NSTL
Elsevier
In this report, we demonstrate a novel method to achieve random lasing in the diffusion regime. One of the missing features of a conventional random laser is directionality. Here, a novel cylindrical microstructure cavity made of silica polymer combination has been used to overcome this barrier. The proposed structure makes use of a doped PMMA as a core and silica as a cladding layer. This waveguide structure can be easily used as an integrated micro random laser as the outside layer material is silica. A random laser mediated by metal nanowire is demonstrated in a cladded microstructure for the first time. We also observed the lowering of threshold and spectral shift of such lasers with the nanowire concentration. A directional laser emission with a narrow spectral line FWHM = 0.19 nm was achieved in our experiments. The lasing modes from the microstructure were characterized in terms of emission wavelength, lasing threshold as well as the temporal evolution of the modes.
Random laserSilica polymer hybrid microstructurePlasmon assisted lasing
Sarkar, Arindam、Venkataraj, Roopa、Krishna, Akshay R.、Anugop, B.、Nampoori, V. P. N.、Kailasnath, M.
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Cochin Univ Sci & Technol, Int Sch Photon, Cochin 682022, Kerala, India
NSTL
Elsevier
