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Proceedings Paper

Investigating material removal mechanisms during laser ablation of InSb
Author(s): Amit Garg; Avinashi Kapoor; K. N. Tripathi; S. K. Bansal
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Paper Abstract

We have investigated laser ablation in InSb in the fluence regime of 8.5 J/cm2 to 21 J/cm2 by studying the crater morphology. Crater morphology shows a non linear change in depth, volume and roughness at fluence of 14.5 J/cm2 (Fcr) and above. These non linear variations with presence of several micro-cavities at the crater bottom (potential bubble nucleation sites) suggest a different material removal mechanism at Fcr and above. The results have been explained in light of various ablation theories which support explosive boiling as a possible mass removal mechanism at Fcr and above. Thermal melting model for laser ablated InSb is in good agreement with the experimental results.

Paper Details

Date Published:
Proc. SPIE 7843, High-Power Lasers and Applications V, 784310; doi: 10.1117/12.868560
Show Author Affiliations
Amit Garg, Univ. of Delhi (India)
Avinashi Kapoor, Univ. of Delhi (India)
K. N. Tripathi, Univ. of Delhi (India)
S. K. Bansal, Univ. of Delhi (India)

Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)

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