Femtosecond laser-induced crystallization of 4-(dimethylamino)-N-methyl-4- stilbazolium tosylate

Yoichiroh Hosokawa*, Hiroaki Adachi, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticle

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A femtosecond laser pulse was irradiated to a supersaturated methanol solution of an organic molecule, 4-(dimethylamino)-N-methyl-4-stilbazolium tosylate (DAST), and its efficient crystallization was demonstrated under concentration and temperature conditions where spontaneous crystallization does not occur. The efficiency was higher than that using a nanosecond laser, and the nucleation depended on the laser repetition rate. The results suggest that the nucleation is trigged by cluster formation, which is ascribed to femtosecond laser irradiation effects, such as shock wave generation due to the ablation of the medium and an optical pressure due to the strong electric field.

Original languageEnglish
Pages (from-to)861-863
Number of pages3
JournalCrystal Growth and Design
Issue number3
StatePublished - 1 May 2005

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