Transient absorption spectroscopic study on photothermal process and laser ablation of poly (N-vinylcarbazole) film

Hiroshi Fukumura; Kouji Hamano; Hiroshi Masuhara

doi:10.1021/j100149a002

Transient absorption spectroscopic study on photothermal process and laser ablation of poly (N-vinylcarbazole) film

Hiroshi Fukumura, Kouji Hamano, Hiroshi Masuhara

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Nanosecond laser photolysis of poly(N-vinylcarbazole) film did not give any appreciable transient absorption above an excitation intensity of 25 mJ/cm². Only a tail of the ground-state absorption was observed, which was analyzed to estimate the temperature below, at, and above laser ablation threshold (60 mJ/cm²). The temperature rise time was less than 50 ns, and the film cooled in a few microseconds. The maximum temperature attained at the excitation intensity just below the threshold was close to the decomposition temperature of the film.

Original language	English
Pages (from-to)	12110-12113
Number of pages	4
Journal	Journal of physical chemistry
Volume	97
Issue number	47
DOIs	https://doi.org/10.1021/j100149a002
Publication status	Published - 1993 Jan 1

ASJC Scopus subject areas

Engineering(all)
Physical and Theoretical Chemistry

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abstract = "Nanosecond laser photolysis of poly(N-vinylcarbazole) film did not give any appreciable transient absorption above an excitation intensity of 25 mJ/cm2. Only a tail of the ground-state absorption was observed, which was analyzed to estimate the temperature below, at, and above laser ablation threshold (60 mJ/cm2). The temperature rise time was less than 50 ns, and the film cooled in a few microseconds. The maximum temperature attained at the excitation intensity just below the threshold was close to the decomposition temperature of the film.",

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year = "1993",

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T1 - Transient absorption spectroscopic study on photothermal process and laser ablation of poly (N-vinylcarbazole) film

AU - Fukumura, Hiroshi

AU - Hamano, Kouji

AU - Masuhara, Hiroshi

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Y1 - 1993/1/1

N2 - Nanosecond laser photolysis of poly(N-vinylcarbazole) film did not give any appreciable transient absorption above an excitation intensity of 25 mJ/cm2. Only a tail of the ground-state absorption was observed, which was analyzed to estimate the temperature below, at, and above laser ablation threshold (60 mJ/cm2). The temperature rise time was less than 50 ns, and the film cooled in a few microseconds. The maximum temperature attained at the excitation intensity just below the threshold was close to the decomposition temperature of the film.

AB - Nanosecond laser photolysis of poly(N-vinylcarbazole) film did not give any appreciable transient absorption above an excitation intensity of 25 mJ/cm2. Only a tail of the ground-state absorption was observed, which was analyzed to estimate the temperature below, at, and above laser ablation threshold (60 mJ/cm2). The temperature rise time was less than 50 ns, and the film cooled in a few microseconds. The maximum temperature attained at the excitation intensity just below the threshold was close to the decomposition temperature of the film.

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