Time-Resolved Digital Holography in the Investigation of Ablation and Micro Fabrication by Femtosecond Pulses
JOURNAL OF LASER MICRO NANOENGINEERING(2013)
Abstract
During the last years it was shown that time-resolved digital holography (TRDH), combining the conventional off-axis digital holography and ultrashort probing laser pulses results in versatile tool suitable for ultra-fast phenomena studies. The temporal resolution of this method depends on the duration of the used ultrashort probing pulses and measurements could be performed in temporal range from similar to 20 fs to similar to 10 ns. We review features of TRDH with femtosecond pulses and its applications for the investigation of such processes occurred or used in laser micro fabrication as femtosecond pulse filamentation in transparent solids, thin film damage by femtosecond pulses and one and double pulse femtosecond laser ablation.
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Key words
time-resolved digital holography,femtosecond pulses,ablation,filamentation,damage
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