Source paper: “Optically-induced charge separation and terahertz emission in unbiased dielectrics” http://www.google.com/url?sa=t&source=web&cd=2&ved=0CCkQFjAB

Source paper: “Optically-induced charge separation and terahertz emission in unbiased dielectrics” http://www.google.com/url?sa=t&source=web&cd=2&ved=0CCkQFjAB&url=http%3A%2F%2Fwww.eecs.umich.edu%2F~scr%2FFisherJAP2011.pdf&rct=j&q=%E2%80%9COptically-induced%20charge%20separation%20and%20terahertz%20emission%20in%20unbiased%20dielectrics%E2%80%9D&ei=g6vTTeiFG8_Tsga3mv3dAg&usg=AFQjCNHhDNA0v13PZ-bzYTGjzH_ksOUicA&cad=rja http://www.google.com/url?sa=t&source=web&cd=2&v...