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

被引:23
作者
Dolgaev, SI [1 ]
Karasev, ME [1 ]
Kulevskii, LA [1 ]
Simakin, AV [1 ]
Shafeev, GA [1 ]
机构
[1] Russian Acad Sci, Inst Gen Phys, Waves Res Ctr, Moscow 119991, Russia
关键词
laser ablation; sapphire; hydrothermal dissolution; supercritical liquid;
D O I
10.1070/QE2001v031n07ABEH002009
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The laser ablation of sapphire is studied by irradiating its interface with water and aqueous solutions of KOH, KCI and Na2CO3 by 2.92-mum 130-ns holmium laser pulses. The ablation rate depends on the concentration and type of the dissolved substance. The highest ablation rate is 2.5 mum 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.
引用
收藏
页码:593 / 596
页数:4
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