Is this project an undergraduate, graduate, or faculty project?
Undergraduate
Project Type
group
Authors' Class Standing
Daniel Weber, Junior Vikas Sudesh, Faculty Haley Kerrigan, Graduate Student Shermineh Rostami-Fairchild, Faculty Martin Richardson, Faculty
Lead Presenter's Name
Daniel Perry Weber
Faculty Mentor Name
Vikas Sudesh
Abstract
Single Shot Ablation Craters with Ultra-Short Laser Pulses: A Comparative Study
D. P. Weber1, *, V. Sudesh1, H. Kerrigan2, S. R. Fairchild2, M. C. Richardson2
1Physical Sciences Department, College of Arts and Sciences, Embry-Riddle Aeronautical University. Daytona Beach, FL, 32114, USA
2Laser Plasma Laboratory, College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
*weberd1@my.erau.edu (832) 533-1318
Laser ablation is a technique to remove material by irradiation. This work qualitatively studies the basic mechanisms of laser ablation on GaAs, Al, Ti, Cu, and ZnSe samples by two regimes: a focused 1064 nm, 14.6 mJ pulse of 8 ns duration from an Nd:YAG laser (ns regime) and a focused 800 nm, 4.2 mJ pulse of 50 fs duration from a Ti:Sapphire laser (fs regime). The materials were ablated in these two regimes to qualitatively investigate the extent of the dominating mechanisms, as seen clearly in their craters. By firing only single shots, the formations that were created remain intact.
The following diagnostics were used to view the craters: a white light interferometric microscope to determine the crater topography, an optical microscope for a more general view, and a scanning electron microscope (SEM) to view the regions smaller than the resolution of the previous instruments. Significant thermo-mechanical stress in the nanosecond regime and a sub-surface boiling layer in the femtosecond regime have been identified. This investigation has concluded and is under final analysis and preparation for publication.
Did this research project receive funding support (Spark, SURF, Research Abroad, Student Internal Grants, Collaborative, Climbing, or Ignite Grants) from the Office of Undergraduate Research?
Yes, Spark Grant
Single Shot Ablation Craters with Ultra-Short Laser Pulses: A Comparative Study
Single Shot Ablation Craters with Ultra-Short Laser Pulses: A Comparative Study
D. P. Weber1, *, V. Sudesh1, H. Kerrigan2, S. R. Fairchild2, M. C. Richardson2
1Physical Sciences Department, College of Arts and Sciences, Embry-Riddle Aeronautical University. Daytona Beach, FL, 32114, USA
2Laser Plasma Laboratory, College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
*weberd1@my.erau.edu (832) 533-1318
Laser ablation is a technique to remove material by irradiation. This work qualitatively studies the basic mechanisms of laser ablation on GaAs, Al, Ti, Cu, and ZnSe samples by two regimes: a focused 1064 nm, 14.6 mJ pulse of 8 ns duration from an Nd:YAG laser (ns regime) and a focused 800 nm, 4.2 mJ pulse of 50 fs duration from a Ti:Sapphire laser (fs regime). The materials were ablated in these two regimes to qualitatively investigate the extent of the dominating mechanisms, as seen clearly in their craters. By firing only single shots, the formations that were created remain intact.
The following diagnostics were used to view the craters: a white light interferometric microscope to determine the crater topography, an optical microscope for a more general view, and a scanning electron microscope (SEM) to view the regions smaller than the resolution of the previous instruments. Significant thermo-mechanical stress in the nanosecond regime and a sub-surface boiling layer in the femtosecond regime have been identified. This investigation has concluded and is under final analysis and preparation for publication.