Each dopant can absorb more than ten photons: Transient absorbance measurement at excitation laser wavelength in polymer ablation

H. Fujiwara, T. Hayashi, Hiroshi Fukumura, H. Masuhara

研究成果: Article査読

52 被引用数 (Scopus)

抄録

Transient absorbance of two doped polymers, poly(methyl methacrylate) with pyrene or biphenyl, at the excitation wavelength was measured under laser ablation conditions. The fluence dependence of the etch depth was explained in terms of absorbance changes due to transient species and scattering by ablated fragments. The total energy absorbed at the threshold was confirmed to be almost identical, independent of the dopant. The number of photons absorbed per dopant was about 12 at the threshold, which will be discussed on the proposed model.

本文言語English
ページ(範囲)2451-2453
ページ数3
ジャーナルApplied Physics Letters
64
18
DOI
出版ステータスPublished - 1994 12月 1

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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