TY - RPRT TI - Phase-matched high-order difference-frequency mixing in plasmas. AU - S Meyer AU - H Eichmann AU - T Menzel AU - S Nolte AU - B Wellegehausen AU - BN Chichkov AU - C Momma PY - 1996 DO - 10.1103/physrevlett.76.3336 UR - https://pubmed.ncbi.nlm.nih.gov/10060941/ ID - 10060941 ER -