This article is cited in 23 papers

Interaction of laser radiation with matter. Laser plasma

Dissolution in a supercritical liquid as a mechanism of laser ablation of sapphire

S. I. Dolgaev, M. E. Karasev, L. A. Kulevskii, A. V. Simakin, G. A. Shafeev

Wave Research Center of Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow

Abstract: The laser ablation of sapphire is studied by irradiating its interface with water and aqueous solutions of KOH, KCl and Na₂CO₃ by 2.92-μm 130-ns holmium laser pulses. The ablation rate depends on the concentration and type of the dissolved substance. The highest ablation rate is 2.5μm per pulse for a laser fluence of 120 J cm^-2. The ablation of sapphire is attributed to its dissolution in water or in aqueous solutions in the supercritical state.

PACS: 79.20.Ds, 64.75.+g

Received: 19.12.2000
Revised: 23.04.2001

 English version: Quantum Electronics, 2001, 31:7, 593–596

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