Investigating material removal mechanisms during laser ablation of InSb

Amit Garg; Avinashi Kapoor; K. N. Tripathi; S. K. Bansal

doi:10.1117/12.892001

26 July 2011 Investigating material removal mechanisms during laser ablation of InSb

Amit Garg, Avinashi Kapoor, K. N. Tripathi, S. K. Bansal

Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 80010A (2011) https://doi.org/10.1117/12.892001
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal

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 F_cr 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.

Citation Download Citation

Amit Garg, Avinashi Kapoor, K. N. Tripathi, and S. K. Bansal "Investigating material removal mechanisms during laser ablation of InSb", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80010A (26 July 2011); https://doi.org/10.1117/12.892001

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