Ultrafast Phenomena XV, July 31-Aug 4, 2006, Monterey, CA, USA
We observe a memory in nonlinear ionization of transparent solids- reduction in ionization threshold with number of laser pulses. Self-organized nanostructures can form because of the positive feedback and local field effects when ultrashort laser pulses are focused inside glass. It provides a positive feedback, lowering the ionization threshold.
Ultrafast Phenomena XV: Proceedings of the 15th International Conference, Pacific Grove, USA, July 30 – August 4, 2006 (2007): 680–682.