Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial

by: Gunnar Dolling, Christian Enkrich, Martin Wegener, Costas M Soukoulis, Stefan Linden

Science, Vol. 312, No. 5775. (12 May 2006), pp. 892-894.

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Abstract

We investigated the propagation of femtosecond laser pulses through a metamaterial that has a negative index of refraction for wavelengths around 1.5 micrometers. From the interference fringes of a Michelson interferometer with and without the sample, we directly inferred the phase time delay. From the pulse-envelope shift, we determined the group time delay. In a spectral region, phase and group velocity are negative simultaneously. This means that both the carrier wave and the pulse envelope peak of the output pulse appear at the rear side of the sample before their input pulse counterparts have entered the front side of the sample. 10.1126/science.1126021

@article{citeulike:770155, abstract = {We investigated the propagation of femtosecond laser pulses through a metamaterial that has a negative index of refraction for wavelengths around 1.5 micrometers. From the interference fringes of a Michelson interferometer with and without the sample, we directly inferred the phase time delay. From the pulse-envelope shift, we determined the group time delay. In a spectral region, phase and group velocity are negative simultaneously. This means that both the carrier wave and the pulse envelope peak of the output pulse appear at the rear side of the sample before their input pulse counterparts have entered the front side of the sample. 10.1126/science.1126021}, author = {Dolling, Gunnar and Enkrich, Christian and Wegener, Martin and Soukoulis, Costas M. and Linden, Stefan }, citeulike-article-id = {770155}, doi = {10.1126/science.1126021}, journal = {Science}, keywords = {metamaterial}, month = {May}, number = {5775}, pages = {892--894}, posted-at = {2006-07-24 00:09:51}, priority = {3}, title = {Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial}, url = {http://dx.doi.org/10.1126/science.1126021}, volume = {312}, year = {2006} }

RIS record

TY - JOUR ID - citeulike:770155 L3 - citeulike-article-id:770155 TI - Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial JF - Science VL - 312 IS - 5775 SP - 892 EP - 894 N2 - We investigated the propagation of femtosecond laser pulses through a metamaterial that has a negative index of refraction for wavelengths around 1.5 micrometers. From the interference fringes of a Michelson interferometer with and without the sample, we directly inferred the phase time delay. From the pulse-envelope shift, we determined the group time delay. In a spectral region, phase and group velocity are negative simultaneously. This means that both the carrier wave and the pulse envelope peak of the output pulse appear at the rear side of the sample before their input pulse counterparts have entered the front side of the sample. 10.1126/science.1126021 KW - metamaterial AU - Dolling, Gunnar AU - Enkrich, Christian AU - Wegener, Martin AU - Soukoulis, Costas AU - Linden, Stefan PY - 2006/05/12/ UR - http://dx.doi.org/10.1126/science.1126021 ER -

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