@article { ISI:000279009900098,
	title = {Ultrafast spatiotemporal relaxation dynamics of excited electrons in a metal nanostructure detected by femtosecond-SNOM},
	journal = {OPTICS EXPRESS},
	volume = {18},
	number = {13},
	year = {2010},
	month = {JUN 21},
	pages = {14232-14237},
	publisher = {OPTICAL SOC AMER},
	type = {Article},
	address = {2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA},
	abstract = {Ultrahigh spatiotemporal resolved pump-probe signal near a gold nano-slit is detected by femtosecond-SNOM. By employing two-color pump-probe configuration and probing at the interband transition wavelength of the gold, signal contributed by surface plasmon polariton is avoided and spatiotemporal evolvement of excited electrons is successfully observed. From the contrast decaying of the periodical distribution of the pump-probe signal, ultrafast diffusion of excited electrons with a time scale of a few hundred femtoseconds is clearly identified. For comparison, such phenomenon cannot be observed by the one-color pump-probe configuration. (C) 2010 Optical Society of America},
	issn = {1094-4087},
	doi = {10.1364/OE.18.014232},
	author = {Li, Zhi and Yue, Song and Chen, Jianjun and Qihuang Gong}
}
