Cross patterning on MgO based on dislocations using femtosecond laser irradiation

Shingo Kanehira, Kiyotaka Miura, Kazuyuki Hirao, Naoya Shibata, Yuichi Ikuhara

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    We show a unique technique to form dense dislocations locally inside a MgO single crystal with a rock-salt type structure using femtosecond (fs) laser irradiation. Cross-shaped patterns of micrometer size, originating from densely introduced dislocations, are formed spontaneously around the focal point. We controlled the three-dimensional propagation of the dislocations by adjusting the pulse energy of the fs laser and NA of objective lens. The technique may open up a new field of dislocation technology for optical applications.

    Original languageEnglish
    Pages (from-to)913-916
    Number of pages4
    JournalApplied Physics A: Materials Science and Processing
    Issue number4
    Publication statusPublished - 2008 Sep 1

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)


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