Photoacoustic measurement of thermal diffusivity of lasing dyes r6g incorporated in poly(methyl methacrylate)(pmma) and copolymer of methyl methacrylate(mma) with 2-hydroxyethyl methacrylate[p(mma:hema)] / Chan Kok Sheng, W. Mahmood Mat Yunus and Wan Md. Zin Wan Yunus

• Main Authors: Chan, Kok Sheng, Mat Yunus, W. Mahmood, Wan Yunus, Wan Md. Zin
• Format: Conference or Workshop Item
• Language: English
• Published: 2002
• Subjects: Spectroscopy
• Online Access: https://ir.uitm.edu.my/id/eprint/74015/1/74015.pdf; https://ir.uitm.edu.my/id/eprint/74015/

The application of photoacoustic technique was demonstrated for measuring the thermal diffusivity of R6G doped in solid matrix poly (methylrnethacrylate) (PMMA) and copolymer of methyl methacrylate(MMA) with 2-hydroxyethyl methacrylate(HEMA) [P(MMA:HEMA)]. The thermal diffusivity value obtained for R6G-doped PMMA is higher than the copolymer ofR6G-doped [P(MMA:HEMA)]. The optical spectra of the samples were measured by using a fibre optics spectrophotometer. The result shows that the R6G-doped [P(MMA:HEMA)] offers a good optical transmission and improved surface quality when compared to R6G-doped PMMA.