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Proceedings Paper

Evolution of laser damage in indium antimonide(InSb) at 1.06-μm wavelength
Author(s): Amit Garg; K. N. Tripathi; Avinashi Kapoor; S. K. Bansal
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Paper Abstract

Evolution of laser damage morphology has been studied in 112 oriented, mirror polished Indium Antimonide(InSb)samples as a function of increasing energy, pulse repetition rate and number of pulses using a Nd:Cr:GSGG laser of 1.06 μm wavelength having a pulse width of 20ns. Scanning Electron Microscope (SEM) investigations of the irradiated samples have been done to understand the evolution of damage morphology. Damage morphology is consistent with surface melting and solidification along with an evidence of subsurface overheating. Temperature profiles calculated at different fluence levels confirm substantial subsurface heating. Multiple pulse damage seen at 20Hz with increasing fluence levels is mainly thermal damage. Thermal modeling has been done to explain different morphological features.

Paper Details

Date Published: 13 January 2005
PDF: 8 pages
Proc. SPIE 5629, Lasers in Material Processing and Manufacturing II, (13 January 2005); doi: 10.1117/12.575444
Show Author Affiliations
Amit Garg, Univ. of Delhi (India)
K. N. Tripathi, Univ. of Delhi (India)
Avinashi Kapoor, Univ. of Delhi (India)
S. K. Bansal, Univ. of Delhi (India)


Published in SPIE Proceedings Vol. 5629:
Lasers in Material Processing and Manufacturing II
ShuShen Deng; Akira Matsunawa; Y. Lawrence Yao; Minlin Zhong, Editor(s)

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