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

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

*此作品的通信作者

研究成果: Article同行評審

49 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2451-2453
頁數3
期刊Applied Physics Letters
64
發行號18
DOIs
出版狀態Published - 1 十二月 1994

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