Picosecond pulsed laser induced optical dichroism in glass with embedded metallic nanoparticles

Mateusz A. Tyrk, W. Allan Gillespie, Gerhard Seifert, Amin Abdolvand

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    14 Citations (Scopus)


    Picosecond (~10 ps) pulsed laser irradiation at 532 nm led to the efficient and scalable fabrication of dichroic areas in glass with spherical silver nanoparticles of ~30 – 40 nm in diameter embedded in a surface layer of thickness ~20 µm. The observed dichroism is due to the uniform and permanent shape transformation of the nanoparticles - from spherical to spheroidal shapes - throughout the irradiated areas and along the laser polarization direction, paving the way for affordable manufacture of polarization-selective diffractive optical elements. The shape modification threshold and the dichroism as a result of Surface Plasmon Resonance band separation were identified. The process was then studied as a function of the laser polarization, repetition rate and the number of pulses fired per spot.
    Original languageEnglish
    Pages (from-to)21823-21828
    Number of pages6
    JournalOptics Express
    Issue number19
    Publication statusPublished - 23 Sept 2013


    • Laser materials processing
    • Glass and other amorphous materials
    • Nanomaterials
    • Optical materials


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