Abstract

Abstract A poly(methyl methacrylate) (PMMA) film capable of dissolving an organic dye was prepared at an elevated temperature under ultra high vacuum (UHV). Residual solvents in PMMA film which may reduce the threshold power of irradiated light to breakdown were analyzed by means of quadrupole mass spectroscopy. It has been established that treatment of the polymer under UHV is essential for optical use.

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