Journal
OPTICS LETTERS
Volume 39, Issue 19, Pages 5638-5640Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.39.005638
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Funding
- Army Research Office
- National Science Foundation [CMMI 1131627]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1131627] Funding Source: National Science Foundation
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Circular craters with diameters of 500 nm are fabricated on the surface of fused silica by femtosecond ultraviolet-infrared (UV-IR) pulse trains with 0.8 nJ UV pulse energy. UV damage thresholds at different IR energies and UV-IR delays are measured. Diameters and depths of the ablated craters can be modified by adding the IR pulse and varying the UV-IR delays. These results demonstrate the feasibility of nanomachining using short wavelength lasers with pulse energy far below normal damage thresholds. (C) 2014 Optical Society of America
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