Internal modification of transparent materials using micro and nanotechnology

Summary form only given, as follows. The nonlinear interaction between glasses or polymers of transparent materials and ultrashort pulse laser called the non-linear multiphoton effect were studied. The nano or microstructure change of glass structures caused by this effect guide the internal modification inside glasses, such as densification, valence reduction of rare-earth ions, single crystal precipitation and so on. In summary, such a ultrashort pulse laser effect of transparent materials is introduced using micro and nanotechnology from the view point of a photonic application.