徳島大学 教育・研究者情報データベース(EDB)

1. (英) Manabu Sato / (日) Manabu Sato

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2. 時実 悠([徳島大学.ポストLEDフォトニクス研究所])

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3. (英) Katsuhiko Miyamoto / (日) Katsuhiko Miyamoto

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4. (英) Takshige Omatsu / (日) Takshige Omatsu

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(英) Selective control of wavefront helicity in a side-pumped Nd:YVO4 vortex laser

(英) Optical vortex modes, possessing a spiral wavefront, an annular intensity profile and orbital angular momentum, mħ (m is termed a topological charge), have been intensely investigated in various applications, such as an optical tweezer, quantum information processing, and laser ablation. Recently, we discovered that the wavefront helicity (clock-wise or counter clock-wise spiral direction) of the optical vortex can be transferred to melted metal through a laser ablation process, forming chiral metal nanoneedles [1]. These nanoneedles will open the possibility of new structured materials, such as chiral planer metamaterials.