In situ tuning of a photonic band gap with laser pulses

Salvatore Stivala, Alessia Pasquazi, Cucini, Salvatore Stivala, Meneghetti, Gaetano Assanto, Comoretto, Vincenzo Amendola

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We report on light-induced optical tuning of colloidal photonic crystals doped with goldnanoparticles (Au-nps). By resonantly exciting the Au-np surface plasmon absorption with picosecond pulses at 0.53 micron in a standard pump-probe setup, we observed permanent changes in the stop band resonance around 1.7 micron, with blue wavelength shifts as large as 30 nm andassociated to a nanoparticle reshaping. Fine tuning was achieved by controlling either the pulse energy or the irradiation time.
Lingua originaleEnglish
pagine (da-a)091111-
Numero di pagine3
RivistaApplied Physics Letters
Stato di pubblicazionePublished - 2008


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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Stivala, S., Pasquazi, A., Cucini, Stivala, S., Meneghetti, Assanto, G., Comoretto, & Amendola, V. (2008). In situ tuning of a photonic band gap with laser pulses. Applied Physics Letters, 93, 091111-.