CO2 laser-induced dislocations and other damage in tellurium single crystals

Quang, N. V.; Shih, I.; Zhang, S. K.; Champness, C. H.
March 1985
Applied Physics Letters;3/15/1985, Vol. 46 Issue 6, p545
Academic Journal
Etching experiments were performed on (0001) oriented tellurium single crystal samples irradiated with a CO2 laser beam to reveal the localized induced dislocations in the crystals. It was found that the tellurium surface is very sensitive to the laser beam. Under low illumination intensity, visible defects were not found but the dislocation density was greatly increased. Under high illumination intensity, visible damage on the surface was observed; the surface was found to be locally remelted by the laser beam to result in a hole with many cracks around it.


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