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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 503-504Lasing Action in Dual-Doped Organic Microcavity...

Lasing Action in Dual-Doped Organic Microcavity with Cascade Energy Transfer

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Abstract:

In this paper, we studied lasing action in dual-doped organic microcavity with cascade Forster energy transfer between polymer and two fluorescent dyes in surface emitting microcavities, which formed by sandwiching a poly(N-vinylcarzole) (PVK) film doped with 8-trishydroxyquinoline (Alq3) and 4-(dicyanomethylene)-2-tert-butyl-6 (1, 1, 7, 7-tet ramethyljulolidyl-9-enyl)-4H–pyran (DCJTB) between a distributed Bragg reflector (DBR) and a silver film mirror. The sample was optically pumped by a frequency-tripled Nd:YAG laser delivering 5.55ns pulses at 355nm with a 10Hz repetition rate. By optimizing the concentrations of Alq3 and DCJTB in PVK, a low lasing threshold of about 9.5µJ per pulse attributed to efficient cascade Forster energy transfer form PVK and Alq3 to DCJTB was obtained. The full width at half maximum (FWHM) of the emission was about 2nm with the peak wavelength at 628nm. Our results demonstrate that the PVK:Alq3:DCJTB could be a promising candidate as gain medium for red organic diode lasers.

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Periodical:

Advanced Materials Research (Volumes 503-504)

Pages:

1125-1128

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.503-504.1125

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Online since:

April 2012

Authors:

Xuan Ke Zhao, Qing Wu Zhao, Xiao Fang Shen

Keywords:

Cascade Energy Transfer, Forster Energy Transfer, Micro-Cavity, Organic Diode Lasers

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