The dual-tripler scheme for enhancing the bandwidth of third-harmonic generation proposed by Eimerl <i>et al</i>. [Opt. Lett. <b>22</b>, 1208 (1997)] is experimentally demonstrated for the conversion of 1054-nm radiation to 351 nm. It is shown that the spacing between the triplers must be carefully controlled. The results are in excellent agreement with theory and indicate that fusion lasers can be frequency tripled with a threefold increase in bandwidth.
© 1998 Optical Society of America
A. Babushkin, R. S. Craxton, S. Oskoui, M. J. Guardalben, R. L. Keck, and W. Seka, "Demonstration of the dual-tripler scheme for increased-bandwidth third-harmonic generation," Opt. Lett. 23, 927-929 (1998)