Resolving dynamics of acoustic phonons by surface plasmons
Optics Letters, Vol. 32, Issue 6, pp. 719-721 (2007)
http://dx.doi.org/10.1364/OL.32.000719
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Abstract
We show that the dynamics of acoustic phonons generated by femtosecond impulsive optical excitation can be clearly resolved by a surface plasmon technique, with enhanced sensitivity orders of magnitude higher than regular optical probe measurements. Our calculations confirm that the enhanced sensitivity is an intrinsic property of the surface plasmon probe. Therefore, the surface plasmon technique is a promising tool to detect small signal changes in optical and mechanical properties on a microscopic scale.
© 2007 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.6430) Spectroscopy : Spectroscopy, photothermal
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
ToC Category:
Ultrafast Optics
History
Original Manuscript: July 31, 2006
Revised Manuscript: December 8, 2006
Manuscript Accepted: December 11, 2006
Published: February 15, 2007
Citation
Jincheng Wang, Jian Wu, and Chunlei Guo, "Resolving dynamics of acoustic phonons by surface plasmons," Opt. Lett. 32, 719-721 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-6-719
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