The mechanisms of refractive index change in poly(methyl methacrylate) by frequency doubled femtosecond laser pulses are investigated. It is demonstrated that positive refractive index modificaton can be caused by a combination of depolymerization and crosslinking. © 2009 Optical Society of America.
|Number of pages||4|
|Journal||Optical Society of America. Journal B: Optical Physics|
|Publication status||Published - 1 Jan 2010|