Microstructures on graphite surfaces fabricated by intense single femtosecond laser pulses

摘要

Several types of center-symmetrical (elliptical) microstructures of multi-nanometer heights are fabricated on a surface of quasi-crystalline graphite ablated by single femtosecond laser pulses with peak intensities in the range of 1-10~2 TW/cm~2. Potential underlying physical mechanisms for these micro-structuring ablative phenomena are discussed.