Efficient gas-phase generation of coherent vacuum ultraviolet radiation Merriam, Andrew J. ; Sharpe, S. J. ; Xia, H. ; Manuszak, D. ; Yin, G. Y. ; Harris, S. E. Abstract Publication: Optics Letters Pub Date: May 1999 DOI: 10.1364/OL.24.000625 Bibcode: 1999OptL...24..625M