Dynamic polarization flip in nanoripples on photoexcited Ti surface near its surface plasmon resonance.
Opt Lett
; 40(21): 4967-70, 2015 Nov 01.
Article
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| MEDLINE
| ID: mdl-26512495
ABSTRACT
Both normal and abnormal sub-100-nanometer ripples (wavenumber â¼10 µm(-1)) were separately observed on Ti surfaces excited by linearly polarized IR femtosecond laser pulses at lower and higher fluences. Numerical modeling of dispersion curves for surface plasmon-polaritons on the photoexcited Ti surfaces demonstrates its surface plasmon resonance with the peak wavenumber â¼8 µm(-1) spectrally tuned by prompt surface optical response, prompt surface charging, and pre-oxidation, with normal/abnormal nanoripples appearing at its red/blue shoulders, respectively.
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Opt Lett
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2015
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