SOLID-STATE DYE-LASERS BASED ON COPOLYMERS OF 2-HYDROXYETHYL METHACRYLATE AND METHYL-METHACRYLATE DOPED WITH RHODAMINE 6G

Rhodamine 6G has been dissolved in copolymers of 2-HydroxyEthyl MethAc rylate (HEMA) and Methyl MethAcrylate (MMA) and the resulting solid-st ate solutions have been pumped at 337 nm and 532 nm. Lasing efficienci es similar to those found in ethanol solution have been obtained with a 1:1 vol/vol HEMA:MMA copolymer matrix, and lifetimes of ca. 10000 (3 37 nm pumping) and ca. 75 000 (532 nm pumping) pulses at repetition ra tes up to 15 Hz and 10 Hz, respectively, have been demonstrated.