Journal
OPTICS EXPRESS
Volume 17, Issue 10, Pages 8423-8432Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.008423
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Funding
- Deutsche Forschungsgemeinschaft [TE770/1]
- National Science Foundation [CHE-050714]
- EU Network of Excellence [NMP3SL-2008-214107-Nanomagma]
- FUNCOAT CONSOLIDER INGENIO [CSD2008-00023]
- MAGPLAS [MAT2008-06765-C02-01/NAN]
- NANOMAGNETCMS [0505/MAT/0194]
- MICROSERES [S-0505/TIC/0191]
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We demonstrate femtosecond plasmonic interferometry with a novel geometry. The plasmonic microinterferometer consists of a tilted slit-groove pair. This arrangement allows for (i) interferometric measurements at a single wavelength with a single microinterferometer and (ii) unambiguous discrimination between changes in real and imaginary parts of the metal dielectric function. The performance is demonstrated by monitoring the sub-picosecond dynamics of hot electrons in gold. (C) 2009 Optical Society of America
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