About Spectral Energy Thresholds of Light-Erosion of Polymer Materials. P. 1. Study of Laser Ablation in the Field of Ultrashort Laser Pulses in Vacuum

Authors: Loktionov Ye.Yu., Ovchinnikov A.V., Protasov Yu.Yu., Sitnikov D.S. Published: 14.10.2013
Published in issue: #2(37)/2010  

Category: Physics  
Keywords: spectral energy thresholds, femtosecond laser pulses, laser ablation, light-erosion, polymer materials

The experimental and diagnostic module with the femtosecond terawatt laser complex (τ0,б ~ 45 ...70 fs, λ = 288, 400, 800 nm) as well as the technique of the superhigh-speed combined interferometry and interference microscopy (Michelson and Mach-Zehnder schemes) of processes of interaction between the ultrashort laser pulses and the condensed media in vacuum are described. The first obtained results of investigations in the spectral energy thresholds and laser ablation speeds of some condensed media based on the polymer-series members (C2F4)n, (CH2O)n in ultraviolet and near infrared ranges of laser radiation wavelengths under a pressure of ~ 5·10-3 Pa are given.