Nanotechnology Glass Project - nanostructuring of glass materials by a femtosecond pulse laser

The nonlinear interaction between glasses and ultrashort laser pulses called the multiphoton effect was studied. The change of glass structures caused by this effect leads to internal modification, on a nano-scale, inside glasses, such as densification, valence reduction of rare-earth ions, single crystal precipitation and so on. In summary, the nonlinear effect of glasses for photonic materials is introduced from the view point of device application.