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Biopolymer based system doped with nonlinear optical dye as a medium for amplified spontaneous emission and lasing

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9 Author(s)
Sznitko, Lech ; Wroclaw University of Technology, 50-370 Wroclaw, Poland ; Mysliwiec, Jaroslaw ; Karpinski, Pawel ; Palewska, Krystyna
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In this paper, we present results of detailed studies on amplified spontaneous emission (ASE) and lasing achieved in a double-layer system consisted of a biopolymer based matrix loaded with 3-(1,1-dicyanoethenyl1)-1phenyl-4,5dihydro-1H-pyrazole organic nonlinear optical dye and photochromic polymer. The laser action was achieved via distributed feedback configuration with third order of Bragg scattering on surface relief grating generated in photochromic polymer. To excite the luminescence, we have used 6 ns pulses of Nd:YAG laser at 532 nm. The ASE and lasing thresholds were estimated to be 17 mJ/cm2 and 11 mJ/cm2, respectively.

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Applied Physics Letters  (Volume:99 ,  Issue: 3 )