Development of magnetic responsive random lasers fabricated by a laser-induced surface roughness

Hideki Fujiwara, Shohei Kawaguchi, Daiki Yonekawa, Hideo Kaiju

研究成果: Article査読

抄録

A magnetic responsive random laser was developed by roughening the surface of a NiFe alloy thin film-coated GaN substrate using an intense laser. By dispersing the magnetic materials and fabricating a surface roughness on the GaN surface after irradiation with intense laser pulses, we confirmed that the threshold of the random laser can be changed by applying an external magnetic field on the substrate. This result suggests that the magneto-optical effect of the residual NiFe alloy on the surface changes the local random feedback, leading to a change in the lasing behavior. Thus, we developed a simple method to fabricate a magnetically responsive random laser directly on a semiconductor substrate using only short laser irradiation.

本文言語English
論文番号041105
ジャーナルApplied Physics Letters
119
4
DOI
出版ステータスPublished - 2021 7 26

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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