Amplified spontaneous emission in the spiropyran-biopolymer based system

Mysliwiec, Jaroslaw; Sznitko, Lech; Bartkiewicz, Stanislaw; Miniewicz, Andrzej; Essaidi, Zacaria; Kajzar, Francois; Sahraoui, Bouchta
June 2009
Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241106
Academic Journal
Amplified spontaneous emission (ASE) phenomenon in the 6-nitro-1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-indolin] organic dye dispersed in a solid matrix has been observed. The biopolymer system deoxyribonucleic acid blended with cationic surfactant molecule cetyltrimethyl-ammonium chloride served as a matrix. ASE appeared under sample excitation by UV light pulses (λ=355 nm) coming from nanosecond or picosecond neodymium doped yttrium aluminum garnet lasers and has been reinforced with green (λ=532 nm) light excitation followed UV light pulse. The ASE characteristics in function of different excitation pulse energies as well as signal gain were measured.


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