Powerful terahertz emission from laser wakefields in plasmas for diagnostics Sheng, Z. -M. ; Zheng, J. ; Wu, H. -C. ; Zhang, J. ; Mima, K. Abstract Publication: Journal of Plasma Physics Pub Date: December 2006 DOI: 10.1017/S0022377806005277 Bibcode: 2006JPlPh..72..795S