Indian Journal of Science and Technology

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Investigation on Picosecond Laser Ablation of Dental Material Using FIB/SEM Techniques


Affiliations
1 Institute of Laser for Postgraduate Studies, University of Baghdad, P.O. Box 47314, Baghdad, Iraq
 

Results of laser ablation for human tooth are reported based on detected images from Focused Ion Beam/Scanning Electron Microscope (FIB/SEM) instruments. The ablation was carried out by exposing a 1 mm thickness of human tooth to 1J/cm2 fluence of Nd: YAG laser operating at 532 nm with pulse duration of 40 ps. The capabilities of the FIB technique involving polishing, etching, drilling, milling in addition to imaging were investigated. The results showed that picosecond pulse duration was not enough to accomplish the ablation process unless the laser energy density is above the ablation threshold. The high potentiality of the technique used was observed for the analysis of FIB images.

Keywords

Laser Ablation, Ablation Threshold, Human Tooth, FIB Technique
User

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  • Investigation on Picosecond Laser Ablation of Dental Material Using FIB/SEM Techniques

Abstract Views: 618  |  PDF Views: 95

Authors

Hussein A. Jawad
Institute of Laser for Postgraduate Studies, University of Baghdad, P.O. Box 47314, Baghdad, Iraq

Abstract


Results of laser ablation for human tooth are reported based on detected images from Focused Ion Beam/Scanning Electron Microscope (FIB/SEM) instruments. The ablation was carried out by exposing a 1 mm thickness of human tooth to 1J/cm2 fluence of Nd: YAG laser operating at 532 nm with pulse duration of 40 ps. The capabilities of the FIB technique involving polishing, etching, drilling, milling in addition to imaging were investigated. The results showed that picosecond pulse duration was not enough to accomplish the ablation process unless the laser energy density is above the ablation threshold. The high potentiality of the technique used was observed for the analysis of FIB images.

Keywords


Laser Ablation, Ablation Threshold, Human Tooth, FIB Technique

References





DOI: https://doi.org/10.17485/ijst%2F2010%2Fv3i2%2F29666