A spatio-temporal focusing technique can be used to enhance the peak intensity in filamentation [Phys. Rev. A 84, 063819 (2011)]. We experimentally applied this technique to remote filament-induced breakdown spectroscopy. Significant enhancement of the fluorescence signals was achieved on iron and aluminum samples from 22 m away using spatio-temporally chirped pulses when compared with using normally compressed pulses.
© 2012 Optical Society of America
Original Manuscript: September 17, 2012
Revised Manuscript: October 7, 2012
Manuscript Accepted: October 8, 2012
Published: November 6, 2012
Bin Zeng, Tie-Jun Wang, Sima Hosseini, Ya Cheng, Zhizhan Xu, Weiwei Liu, and See Leang Chin, "Enhanced remote filament-induced breakdown spectroscopy with spatio-temporally chirped pulses," J. Opt. Soc. Am. B 29, 3226-3230 (2012)