Presentation Information

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8a-A31-3]Influence of voltage application for laser-induced damage on optical coating at multiple irradiation

〇Tomokazu Nakai¹, Katsuhiro Mikami^1,2, Shogo Hashimoto², Satoshi Ikeda², Keisuke Omagari¹, Kazuyuki Uno³, Takahisa Jitsuno^4,5 (1.Kindai Univ., 2.Grad.School of Kindai Univ, 3.Univ. Yamanashi, 4.ILE Osaka Univ., 5.ELI-NP)

Keywords:

laser-induced damage,voltage application

To evaluate the effect of voltage application on optical thin films, N-on-1 laser damage tests were conducted using TiO₂ single-layer coatings. After applying a DC voltage of 1 kV to the samples, the laser-induced damage threshold (LIDT) and damage morphologies were examined. As a result, multiple damage morphologies were observed, and damage sites with small damage marks tended to exhibit an increased LIDT after voltage application. This presentation reports the influence of voltage application on the laser damage characteristics of optical thin films.

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