Energy transfer in coumarin 503 dye doped polymer laser

摘要

Abstract: Solid state dye doped polymer is an attractive alternative to the conventional liquid dye solution. In this paper, the laser characteristics of Coumarin 1(C1), Coumarin 503 and a mixture of C1 and C503 doped polymethyl methacrylate rods modified with ethyl alcohol are studied under nitrogen laser excitation in a transverse pumping configuration and the variation of gain of the dye in solid medium for different pumping powers are studied. The photo bleaching of dye doped polymer rod is also studied. !8