RT - Journal Article T1 - Evaluation of Crater Geometry in Ti Target Irradiated by Nanosecond Laser Beam in Water JF - opsi YR - 2014 JO - opsi VO - 20 IS - 0 UR - http://opsi.ir/article-1-368-en.html SP - 1229 EP - 1232 K1 - Keywords: Crater diameter K1 - High power pulsed laser K1 - Laser ablation K1 - Liquid interaction medium K1 - Metal target. AB - Abstract- Micro size craters were created by focusing of nanosecond laser beam on Ti target in distilled water. The geometry of craters is important in some applications such as micromachining. In this paper we concentrate on the diameter of the craters. The crater geometry was characterized by using an optical microscope. Different laser fluences were used in the experiment and their effects on the crater diameter were studied. Target was placed inside the water cell and the experiment was carried out for different water depths. The results show that for higher fluences, the crater diameters are larger. Results also show that the crater diameters’ can be varied if the water depth is changed.  LA eng UL http://opsi.ir/article-1-368-en.html M3 ER -